Quarter Period Consolidated Statement Of Comprehensive Income
| Concept | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Quarter period consolidated statement of comprehensive income | ||||||||||
| Statement of comprehensive income | ||||||||||
| Profit (loss) | 
                                                -706,547,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -114,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -114,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -114,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -114,628,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,191,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                792,280,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,191,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,191,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,191,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | 
                                                29,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Foreign currency translation adjustment | 
                                                643,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -178,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Share of other comprehensive income of entities accounted for using equity method | 
                                                61,725,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -6,975,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other comprehensive income | 
                                                91,924,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                -7,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Comprehensive income | 
                                                -614,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                785,126,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | 
                                                -602,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                773,529,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Comprehensive income attributable to non-controlling interests | 
                                                -11,689,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                11,597,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — |