Key Financial Data Of Group
| Concept | As at 2025-02-28 | 2024-09-01 to 2025-02-28 | 2023-09-01 to 2024-08-31 | As at 2024-08-31 | 
|---|---|---|---|---|
| Key financial data of group | ||||
| Business results of group | ||||
| Net sales | — | 
                                                3,630,436,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,418,581,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Ordinary profit (loss) | — | 
                                                136,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                425,890,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net assets | 
                                                1,755,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                770,254,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Total assets | 
                                                4,048,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,451,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Basic earnings (loss) per share | — | 
                                                29.13
                                                
                                             | 
                                                142.95
                                                
                                             | — | 
| Diluted earnings per share | — | 
                                                28.41
                                                
                                             |  | — | 
| Equity-to-asset ratio | 
                                                0.434
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.223
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
| Net cash provided by (used in) operating activities | — | 
                                                102,442,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                665,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -424,244,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -434,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                609,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                113,604,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                1,293,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,005,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |