Notes - Segment Information, Etc.
| Concept | 2024-12-01 to 2025-05-31 | 2024-12-01 to 2025-05-31 | 2024-12-01 to 2025-05-31 | 2024-12-01 to 2025-05-31 | 2024-12-01 to 2025-05-31 | 2023-12-01 to 2024-05-31 | 2023-12-01 to 2024-05-31 | 2023-12-01 to 2024-05-31 | 2023-12-01 to 2024-05-31 | 2023-12-01 to 2024-05-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                1,042,148,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,669,782,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,293,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                429,706,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                158,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,952,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,204,051,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                364,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                337,277,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,847,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,208,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |