Statement Of Changes In Net Assets
| Concept | 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 | 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 | 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 | 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 | 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 | 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 | 
                                                4,296,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,736,641,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,724,141,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                279,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -583,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,296,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                279,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                279,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                3,563,606,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                279,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                279,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,004,108,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                279,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,563,606,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,991,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                279,248,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,232,256,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,802,784,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                279,248,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                279,248,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,802,784,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,244,756,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | |||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | 
                                                912,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                912,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                912,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                912,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                857,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                857,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                857,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                857,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                732,533,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                732,533,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                732,417,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -115,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                732,417,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                759,351,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                760,821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                760,821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                759,351,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — |