Consolidated Statement Of Income
| Concept | 2023-12-01 to 2024-02-29 | 2023-06-01 to 2024-02-29 | 2022-06-01 to 2023-02-28 | 2022-12-01 to 2023-02-28 | 
|---|---|---|---|---|
| Consolidated statement of income | ||||
| Statement of income | ||||
| Net sales | 
                                                5,507,799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,658,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,804,459,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,318,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Operating expenses | ||||
| Selling, general and administrative expenses | 
                                                1,215,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,833,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,469,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,105,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Operating expenses | ||||
| Cost of sales | 
                                                3,268,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,537,180,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,824,037,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,973,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Gross profit (loss) | 
                                                2,239,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,121,045,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,980,421,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,344,802,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net sales | ||||
| Operating profit (loss) | 
                                                1,024,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,287,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,510,452,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,238,909,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | 
                                                1,053,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,337,638,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,577,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,267,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-operating income | ||||
| Interest income | 
                                                641,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,675,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Dividend income | — | 
                                                500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other | 
                                                2,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,126,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,644,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-operating income | 
                                                31,458,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,497,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,568,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cost of sales | ||||
| Selling, general and administrative expenses | ||||
| Non-operating expenses | ||||
| Other | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,113,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                796,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-operating expenses | 
                                                2,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,178,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Extraordinary losses | 
                                                4,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Gross profit | ||||
| Profit (loss) before income taxes | 
                                                1,049,319,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,333,389,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,577,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,267,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes - current | 
                                                284,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                612,931,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                681,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                374,978,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes - deferred | 
                                                33,039,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -28,908,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                92,204,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,398,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Extraordinary losses | ||||
| Income taxes | 
                                                318,013,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                584,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                773,583,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                385,377,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit (loss) | 
                                                731,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,749,366,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,803,816,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                881,923,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit (loss) attributable to owners of parent | 
                                                731,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,749,366,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,803,816,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                881,923,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | ||||
| Valuation difference on available-for-sale securities | 
                                                1,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,227,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                155,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                -41,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,906,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,007,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -79,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other comprehensive income | 
                                                -40,032,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,417,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -79,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Profit attributable to | ||||
| Comprehensive income | 
                                                691,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,814,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,865,233,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                802,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Comprehensive income attributable to | ||||
| Comprehensive income attributable to owners of parent | 
                                                691,396,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,814,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,865,233,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                802,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |