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 | 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 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 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 | 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 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 | 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 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in net assets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net assets | 
                                                -41,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                45,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                40,181,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                999,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                615,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,484,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -41,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                615,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                75,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                380,004,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                835,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                234,004,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,484,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                999,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                615,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                945,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,181,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -41,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                326,365,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                75,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                722,693,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                180,365,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -41,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                615,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,372,339,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,372,339,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                945,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                262,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                615,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                615,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                116,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,686,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,257,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                882,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,094,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,868,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -41,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -41,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,181,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,257,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                882,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                607,174,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Changes during period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — | — | — | — | — | — | — | 
                                                83,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                83,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                83,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                142,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                83,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                81,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
                                                81,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                81,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | 
                                                81,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                133,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Total changes during period | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                53,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                53,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                112,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                112,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                112,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                115,057,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,066,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,066,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -268,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                63,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                115,519,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                115,057,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                -268,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |