Consolidated Statement Of Income
| Concept | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated statement of income | ||||||||||||
| Statement of income | ||||||||||||
| Net sales | 
                                                740,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,501,585,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,165,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                924,223,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,166,352,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -956,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                738,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,011,688,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,370,452,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,010,522,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                902,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cost of sales | — | — | 
                                                3,877,463,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                3,659,618,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Operating expenses | ||||||||||||
| Selling, general and administrative expenses | — | — | 
                                                1,148,264,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                1,132,032,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Provision of allowance for doubtful accounts | — | — | 
                                                -968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                -100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Operating expenses | ||||||||||||
| Other operating expenses | ||||||||||||
| Operating expenses | ||||||||||||
| Ordinary profit (loss) | — | — | 
                                                150,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                229,896,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| General and administrative expenses | ||||||||||||
| Operating expenses | ||||||||||||
| Gross profit (loss) | — | — | 
                                                1,287,931,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                1,350,904,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net sales | ||||||||||||
| Operating profit (loss) | 
                                                117,766,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                139,666,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                275,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -135,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                136,734,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                361,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                165,078,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                218,872,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,934,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -142,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-operating income | — | — | 
                                                19,285,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                17,765,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividend income | — | — | 
                                                1,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                1,106,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest income | — | — | 
                                                139,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                8,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating income | ||||||||||||
| Other | — | — | 
                                                1,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                5,751,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cost of sales | ||||||||||||
| Selling, general and administrative expenses | ||||||||||||
| Non-operating expenses | ||||||||||||
| Interest expenses | — | — | 
                                                4,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                2,834,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other | — | — | 
                                                138,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating expenses | — | — | 
                                                8,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                6,740,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) before income taxes | — | — | 
                                                150,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                229,896,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Gross profit | ||||||||||||
| Income taxes - current | — | — | 
                                                58,081,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                73,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes - deferred | — | — | 
                                                -4,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                3,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes | — | — | 
                                                54,058,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                77,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) | — | — | 
                                                96,368,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                151,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) attributable to owners of parent | — | — | 
                                                96,368,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                151,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other comprehensive income | ||||||||||||
| Valuation difference on available-for-sale securities | — | — | 
                                                -789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                8,263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other comprehensive income | — | — | 
                                                -789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                8,263,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit attributable to | ||||||||||||
| Comprehensive income | — | — | 
                                                95,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                160,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Comprehensive income attributable to | ||||||||||||
| Comprehensive income attributable to owners of parent | — | — | 
                                                95,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | — | — | 
                                                160,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — |