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 | 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 | 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 | 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 | 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 | 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 | 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 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in net assets | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in net assets | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                9,114,098,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                8,779,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,524,562,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                344,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -324,362,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                9,127,766,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                314,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,668,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,668,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                314,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                9,198,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                314,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                314,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -353,319,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,892,865,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                344,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                9,198,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,638,155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                344,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,785,583,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,311,926,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                314,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,412,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                314,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -397,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,301,514,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,040,293,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | 
                                                410,119,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                410,119,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                410,119,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                410,119,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
                                                172,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                172,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                172,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                172,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -113,593,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -113,593,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,668,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -84,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,668,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -70,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                28,957,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -147,428,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -102,781,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -113,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                44,647,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,412,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -147,428,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — |