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 | — | 
                                                7,593,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,207,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                7,879,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | 
                                                -1,703,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,597,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit (loss) attributable to owners of parent | — | 
                                                -1,455,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,032,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -986,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income | — | 
                                                -1,548,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,476,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -796,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                30,185,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                32,592,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,319,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | 
                                                48,718,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                41,423,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | — | 
                                                -92.75
                                                
                                             | 
                                                193.62
                                                
                                             | — | — | 
                                                -63.07
                                                
                                             | 
| Diluted earnings per share | — |  |  | — | — |  | 
| Equity-to-asset ratio | 
                                                0.619
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.787
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.724
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -7,060,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,940,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -6,419,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) investing activities | — | 
                                                -7,714,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -941,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -818,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) financing activities | — | 
                                                8,782,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,660,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and cash equivalents | 
                                                12,079,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                17,935,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,418,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |