Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | ||||||||||||
| Segment information | ||||||||||||
| Disclosure of sales, profit (loss), asset, liability, and other items for each reportable segment | ||||||||||||
| Sales | ||||||||||||
| Revenues from external customers | 
                                                1,357,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,889,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,328,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,081,567,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,328,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,844,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,341,621,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,935,681,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,121,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,121,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||
| Depreciation | 
                                                15,529,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,512,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                88,974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,585,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,610,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,076,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,992,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                6,261,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                959,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                318,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                311,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                318,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,659,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                474,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                575,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                575,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |