Consolidated Statement Of Profit Or Loss
| Concept | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2023-10-01 to 2023-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 2022-10-01 to 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated statement of profit or loss | ||||||||||||||||||||||||||
| Statement of profit or loss | ||||||||||||||||||||||||||
| Revenue | 
                                                2,093,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                5,528,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                569,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,190,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,191,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,583,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,463,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                622,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,499,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                7,585,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cost of sales | — | — | — | — | — | — | — | — | — | — | 
                                                527,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                328,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Gross profit | — | — | — | — | — | — | — | — | — | — | 
                                                7,662,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                7,254,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Selling, general and administrative expenses | — | — | — | — | — | — | — | — | — | — | 
                                                7,668,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                6,972,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other income | — | — | — | — | — | — | — | — | — | — | 
                                                110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                683,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Other expenses | — | — | — | — | — | — | — | — | — | — | 
                                                156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Operating profit (loss) | — | — | — | — | — | — | — | — | — | — | 
                                                -52,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                822,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Finance income | — | — | — | — | — | — | — | — | — | — | 
                                                29,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Finance costs | — | — | — | — | — | — | — | — | — | — | 
                                                72,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                19,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Share of profit (loss) of investments accounted for using equity method | — | — | — | — | — | — | — | — | — | — | 
                                                -35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -70,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) before tax | — | — | — | — | — | — | — | — | — | — | 
                                                -131,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                737,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Income tax expense | — | — | — | — | — | — | — | — | — | — | 
                                                265,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -397,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -397,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -397,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                567,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) attributable to | ||||||||||||||||||||||||||
| Owners of parent | — | — | — | — | — | — | — | — | — | — | 
                                                -397,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Earnings (loss) per share | ||||||||||||||||||||||||||
| Basic earnings (loss) per share | — | — | — | — | — | — | — | — | — | — | 
                                                -3.11
                                                
                                             | — | — | 
                                                4.35
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | 
| Diluted earnings (loss) per share | — | — | — | — | — | — | — | — | — | — | 
                                                -3.11
                                                
                                             | — | — | 
                                                4.34
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — |