Statement Of Changes In Net Assets
| Concept | As at 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 | 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 | 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 | 2024-04-01 to 2025-03-31 | 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 | 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 | 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 | 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 | 2023-04-01 to 2024-03-31 | As at 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 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                392,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                699,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                46,667,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,347,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -453,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                410,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                699,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                17,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                17,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                381,099,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                699,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -453,386,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                699,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                394,099,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                34,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,620,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,213,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,029,920,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                816,726,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -453,386,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,186,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,620,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | 
                                                34,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                34,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                34,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                34,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                34,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                34,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                34,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                34,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | — | 
                                                2,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                9,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                11,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,748,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,235,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                15,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -6,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                6,840,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -816,726,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,655,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                324,912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                331,753,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,330,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,513,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,840,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,655,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — |