Key Financial Data Of Group
| Concept | As at 2025-02-28 | 2024-09-01 to 2025-02-28 | As at 2024-08-31 | 2023-09-01 to 2024-08-31 | As at 2024-02-29 | 2023-09-01 to 2024-02-29 | 
|---|---|---|---|---|---|---|
| Key financial data of group | ||||||
| Business results of group | ||||||
| Net sales | — | 
                                                121,572,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                224,542,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                104,634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | 
                                                6,478,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                15,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,482,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit (loss) attributable to owners of parent | — | 
                                                4,669,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,149,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,554,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income | — | 
                                                3,712,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                12,102,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,027,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                112,880,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                110,803,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                100,983,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | 
                                                171,361,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                168,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                157,753,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | — | 
                                                95.07
                                                
                                             | — | 
                                                166.28
                                                
                                             | — | 
                                                52.15
                                                
                                             | 
| Diluted earnings per share | — | 
                                                94.47
                                                
                                             | — | 
                                                164.87
                                                
                                             | — | 
                                                51.66
                                                
                                             | 
| Equity-to-asset ratio | 
                                                0.656
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
                                                0.656
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
                                                0.638
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                11,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                24,124,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                11,173,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) investing activities | — | 
                                                -9,332,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -8,870,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,308,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) financing activities | — | 
                                                -6,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -14,840,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -4,946,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and cash equivalents | 
                                                67,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                71,949,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                71,079,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |