Key Financial Data Of Reporting Company
| 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 reporting company | ||||||
| Business results of reporting company | ||||||
| Net sales | — | 
                                                62,002,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                135,701,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                65,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | 
                                                2,589,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -7,998,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                67,423,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                68,591,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | 
                                                144,823,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                145,677,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,369,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | — | 
                                                21.10
                                                
                                             | 
                                                -86.21
                                                
                                             | — | — | 
                                                -62.31
                                                
                                             | 
| Diluted earnings per share | — | 
                                                21.08
                                                
                                             |  | — | — |  | 
| Equity-to-asset ratio | 
                                                0.465
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.470
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.441
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -8,762,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,263,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -15,802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) investing activities | — | 
                                                -1,437,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,471,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -729,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) financing activities | — | 
                                                3,406,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,092,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                11,526,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and cash equivalents | 
                                                15,076,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                21,947,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,825,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |