Key Financial Data Of Group
| Concept | As at 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|
| Key financial data of group | ||||||
| Business results of group | ||||||
| Net sales | — | 
                                                7,818,720,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,390,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                7,193,162,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | 
                                                86,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                603,415,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                136,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit (loss) attributable to owners of parent | — | 
                                                48,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                377,603,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                73,594,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income | — | 
                                                34,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                421,352,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                98,208,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                7,809,859,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                7,859,808,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,536,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | 
                                                14,372,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                14,942,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,436,448,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | — | 
                                                8.59
                                                
                                             | 
                                                67.33
                                                
                                             | — | — | 
                                                13.12
                                                
                                             | 
| Diluted earnings per share | — |  |  | — | — |  | 
| Equity-to-asset ratio | 
                                                0.543
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.526
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.522
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                95,881,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                578,611,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                110,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) investing activities | — | 
                                                -425,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -117,588,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                93,099,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) financing activities | — | 
                                                -238,341,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -349,513,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -195,382,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and cash equivalents | 
                                                4,182,811,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,761,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,654,984,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |