Notes - Segment Information
| Concept | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-03-31 | 2022-04-01 to 2023-03-31 | 
|---|---|---|---|---|
| Notes - Segment information | ||||
| Segment information | ||||
| Revenue | ||||
| Revenue | 
                                                4,354,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share of profit (loss) of investments accounted for using equity method | 
                                                21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -195,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit (loss) before tax | 
                                                -1,141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                53,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | — | 
                                                49,999,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,187,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Investments accounted for using equity method | — | 
                                                261,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                240,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Impairment losses | 
                                                660,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |