Semi-Annual Statement Of Cash Flows
| Concept | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2023-03-31 | 2022-04-01 to 2023-03-31 | As at 2022-03-31 | 
|---|---|---|---|---|---|
| Semi-annual statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Profit (loss) before income taxes | — | 
                                                -139,629,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -774,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | 
                                                93,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                112,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Impairment losses | — | 
                                                89,619,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                92,817,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in allowance for doubtful accounts | — | 
                                                55,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -46,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest expenses | — | 
                                                3,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in provision for retirement benefits | — | 
                                                -22,836,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -48,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in provision for bonuses | — | 
                                                -8,355,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,548,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in trade receivables | — | 
                                                -8,796,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                22,013,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in inventories | — | 
                                                13,910,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                20,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in trade payables | — | 
                                                -12,340,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -46,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | 
                                                21,530,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                42,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Subtotal | — | 
                                                56,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -517,781,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | 
                                                -2,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,778,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -36,512,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -41,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -25,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -582,507,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -85,210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -160,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from sale of property, plant and equipment | — | 
                                                40,453,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | 
                                                -5,324,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -14,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -119,118,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||
| Proceeds from short-term borrowings | — | 
                                                44,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repayments of short-term borrowings | — | 
                                                -70,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -102,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from long-term borrowings | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                69,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repayments of long-term borrowings | — | 
                                                -43,141,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -53,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -69,391,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                108,415,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -109,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -593,210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                266,177,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                375,329,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                968,540,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |