Semi-Annual Consolidated Statement Of Comprehensive Income
| Concept | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Semi-annual consolidated statement of comprehensive income | ||||||||||
| Statement of comprehensive income | ||||||||||
| Profit (loss) | 
                                                -1,978,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,954,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,978,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,978,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,978,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                216,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                216,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                216,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                205,448,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                216,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | — | 
                                                2,290,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other comprehensive income | — | 
                                                2,290,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Comprehensive income | — | 
                                                -1,952,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                206,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | — | 
                                                -1,952,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                206,317,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |