Statement Of Changes In Equity
| Concept | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                -71,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,922,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                43,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                88,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                43,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,563,537,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,647,939,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -71,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,922,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,834,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                612,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                696,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                579,570,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,691,174,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                2,606,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                43,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,514,872,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -47,888,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                563,456,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                42,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                42,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,899,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                28,646,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                644,607,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                534,809,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,899,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -47,888,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,810,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,638,183,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,596,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,557,032,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                14,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                406,355,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,806,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,910,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,910,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                380,548,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,426,283,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,372,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -47,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -47,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,441,245,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,357,883,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                474,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Dividends of surplus | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                -39,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -39,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -39,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -39,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                -39,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -39,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -39,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -28,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -28,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                -28,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -28,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                -28,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -28,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -28,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                87,704,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                87,704,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                87,704,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                90,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                87,704,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                185,493,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                185,493,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                185,493,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                185,493,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                198,244,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Net changes in items other than shareholders' equity | — | — | — | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,571,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -23,571,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -23,571,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,571,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,761,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                48,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                49,740,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                51,915,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                52,990,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,915,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                23,571,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                154,260,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                169,740,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,810,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,810,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                156,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                184,187,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,810,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                157,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                169,851,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,810,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                196,938,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,810,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |