Notes - Segment Information, Etc.
| Concept | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | 2023-02-01 to 2024-01-31 | 2022-02-01 to 2023-01-31 | 2022-02-01 to 2023-01-31 | 2022-02-01 to 2023-01-31 | 2022-02-01 to 2023-01-31 | 2022-02-01 to 2023-01-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                80,927,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,552,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                310,965,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                130,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                102,228,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                496,493,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                133,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                260,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                7,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,568,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,028,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,409,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                915,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                419,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,993,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |