Statement Of Changes In Equity
| Concept | As at 2025-02-28 | 2024-03-01 to 2025-02-28 | As at 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | As at 2025-02-28 | 2024-03-01 to 2025-02-28 | As at 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | As at 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | As at 2025-02-28 | As at 2025-02-28 | 2024-03-01 to 2025-02-28 | As at 2025-02-28 | As at 2025-02-28 | 2024-03-01 to 2025-02-28 | As at 2025-02-28 | As at 2025-02-28 | As at 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | As at 2025-02-28 | As at 2025-02-28 | As at 2025-02-28 | As at 2025-02-28 | 2024-03-01 to 2025-02-28 | 2024-03-01 to 2025-02-28 | As at 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | 2023-03-01 to 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | 2023-03-01 to 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | As at 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | As at 2024-02-29 | 2023-03-01 to 2024-02-29 | 2023-03-01 to 2024-02-29 | As at 2024-02-29 | 2023-03-01 to 2024-02-29 | As at 2024-02-29 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | As at 2023-02-28 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -23,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                593,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                593,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -438,215,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -1,724,676,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -481,557,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,725,636,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -438,215,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -23,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                673,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                511,245,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -481,557,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,599,308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                960,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                673,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -23,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                673,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                593,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                61,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,213,925,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                30,153,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                593,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                593,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -23,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                960,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,212,965,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,252,546,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -9,427,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                673,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                30,153,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,337,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                960,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -884,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -23,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                415,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -881,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -23,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                415,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -45,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -885,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -153,085,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                335,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -156,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                335,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                335,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -156,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Issuance of new shares | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                514,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                514,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                514,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                514,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -511,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -511,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -392,504,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -511,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -511,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                -416,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -328,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -328,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -328,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -328,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | 
                                                -61,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -61,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -45,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -45,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                -61,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -511,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -511,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -490,504,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -511,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -428,788,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -511,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -346,761,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -82,026,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                98,035,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -32,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -32,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -328,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                143,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -45,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -328,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -371,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                186,855,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                186,855,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |