Semi-Annual Consolidated Statement Of Cash Flows
| Concept | 2023-03-01 to 2024-02-29 | As at 2024-02-29 | 2022-03-01 to 2023-02-28 | As at 2023-02-28 | As at 2022-02-28 | 
|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Profit (loss) before income taxes | 
                                                103,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                259,706,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Depreciation | 
                                                161,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                157,708,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Impairment losses | 
                                                52,515,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                11,598,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividend income | 
                                                -2,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest expenses | 
                                                5,289,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,293,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Increase (decrease) in provision for bonuses | 
                                                -20,746,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -12,374,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Decrease (increase) in inventories | 
                                                5,502,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,502,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Increase (decrease) in trade payables | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -29,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other, net | 
                                                -8,440,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -16,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Subtotal | 
                                                332,771,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                322,952,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | 
                                                3,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,415,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | 
                                                -5,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -4,331,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | 
                                                -49,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -127,552,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | 
                                                281,202,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                193,484,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | 
                                                -98,549,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -206,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of investment securities | 
                                                -3,597,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -33,596,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | 
                                                -97,616,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -225,687,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | |||||
| Proceeds from long-term borrowings | 
                                                1,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Redemption of bonds | 
                                                -50,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of long-term borrowings | 
                                                -657,669,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -644,891,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Purchase of treasury shares | 
                                                -810,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividends paid | 
                                                -75,077,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -75,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | 
                                                304,810,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -230,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | 
                                                2,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | 
                                                488,398,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -262,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | — | 
                                                960,485,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                472,086,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                662,428,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |