Consolidated Statement Of Income
| 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 | 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 | 
|---|---|---|---|---|---|---|---|---|
| Consolidated statement of income | ||||||||
| Statement of income | ||||||||
| Net sales | 
                                                5,868,794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                5,888,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Operating expenses | ||||||||
| Selling, general and administrative expenses | 
                                                1,473,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,481,139,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | 
                                                58,776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                57,765,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Operating expenses | ||||||||
| Operating expenses - general | ||||||||
| Remuneration for directors (and other officers) | 
                                                86,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                89,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Operating expenses | ||||||||
| Operating profit (loss) | 
                                                264,054,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                259,405,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net sales | ||||||||
| General and administrative expenses | ||||||||
| Salaries | — | — | — | — | — | — | — | — | 
| Operating expenses | ||||||||
| Gross profit (loss) | 
                                                1,737,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,740,545,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Ordinary profit (loss) | 
                                                257,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                256,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Non-operating income | ||||||||
| Interest income | 
                                                254,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                40,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Dividend income | 
                                                1,139,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other | 
                                                1,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Non-operating income | 
                                                5,548,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                6,853,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Extraordinary income | 
                                                6,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                15,836,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Selling, general and administrative expenses | ||||||||
| Extraordinary losses | 
                                                4,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Non-operating expenses | ||||||||
| Interest expenses | 
                                                5,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                2,670,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other | 
                                                672,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Non-operating expenses | 
                                                12,543,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                9,319,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Gross profit | ||||||||
| Profit (loss) before income taxes | 
                                                258,227,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                269,776,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Extraordinary income | ||||||||
| Gain on sale of non-current assets | 
                                                672,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes - current | 
                                                91,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                78,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Extraordinary losses | ||||||||
| Loss on retirement of non-current assets | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes - deferred | 
                                                -8,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                7,712,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes | 
                                                83,198,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | 
                                                85,835,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Profit (loss) | 
                                                175,029,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,029,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,029,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,029,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                183,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                183,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                183,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                183,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |