Statement Of Changes In Net Assets
| 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 | 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 | 2024-04-01 to 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                -187,045,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                12,696,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,770,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -187,045,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                13,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                9,760,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                200,826,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,834,119,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,859,854,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,783,131,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                12,696,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                12,611,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -203,641,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,691,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                200,826,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                9,779,296,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,790,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -203,641,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,699,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,698,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                12,611,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,560,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                200,826,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,659,807,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,650,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,480,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -203,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -203,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,653,377,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,480,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,730,516,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                332,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                332,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                332,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
                                                318,421,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                332,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                362,789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                362,789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                362,789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                362,789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                280,546,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,401,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                16,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                69,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                85,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,401,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                85,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                71,418,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                83,819,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                69,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                131,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                48,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                130,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                130,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -291,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                131,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,780,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -291,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |