Key Financial Data Of Group
| Concept | As at 2024-11-30 | 2024-06-01 to 2024-11-30 | 2023-06-01 to 2024-05-31 | As at 2024-05-31 | As at 2023-11-30 | 2023-06-01 to 2023-11-30 | 
|---|---|---|---|---|---|---|
| Key financial data of group | ||||||
| Business results of group | ||||||
| Net sales | — | 
                                                8,976,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,022,443,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                8,661,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | 
                                                601,171,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,020,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                843,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit (loss) attributable to owners of parent | — | 
                                                339,165,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,233,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                506,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income | — | 
                                                339,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,242,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                510,117,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                5,664,595,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                5,776,464,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,275,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | 
                                                12,532,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                11,469,209,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,105,047,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | — | 
                                                44.17
                                                
                                             | 
                                                159.88
                                                
                                             | — | — | 
                                                65.60
                                                
                                             | 
| Diluted earnings per share | — |  |  | — | — |  | 
| Equity-to-asset ratio | 
                                                0.449
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.500
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.472
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                428,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,506,289,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                709,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) investing activities | — | 
                                                -940,915,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -391,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -147,813,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) financing activities | — | 
                                                -189,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -740,987,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -274,648,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and cash equivalents | 
                                                5,950,695,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                6,653,088,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,566,072,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |