Semi-Annual Consolidated Statement Of Cash Flows
| Concept | As at 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2022-09-30 | 
|---|---|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | |||||||
| Statement of cash flows | |||||||
| Cash flows from operating activities | |||||||
| Profit (loss) before income taxes | — | 
                                                -362,143,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                742,950,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -539,355,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,477,130,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                21,421,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                11,045,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in allowance for doubtful accounts | — | — | 
                                                10,161,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,667,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividend income | — | — | 
                                                -9,186,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -11,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest expenses | — | — | 
                                                54,552,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                48,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in retirement benefit liability | — | — | 
                                                307,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in provision for bonuses | — | — | 
                                                -4,844,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                6,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in trade receivables | — | — | 
                                                -399,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                112,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in inventories | — | — | 
                                                -6,245,181,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                755,416,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in trade payables | — | — | 
                                                1,371,593,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -388,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | — | 
                                                -25,224,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -90,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Subtotal | — | — | 
                                                -3,657,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,119,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | — | — | 
                                                9,186,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                11,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | — | 
                                                -23,813,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -48,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | — | 
                                                -333,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -353,464,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                -3,976,454,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,732,794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||||
| Purchase of property, plant and equipment | — | — | 
                                                -773,887,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -22,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Loan advances | — | — | 
                                                -320,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from collection of loans receivable | — | — | 
                                                615,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | — | 
                                                2,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                6,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -706,444,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -230,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||||
| Proceeds from short-term borrowings | — | — | 
                                                4,459,911,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,635,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repayments of short-term borrowings | — | — | 
                                                -1,383,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -3,396,656,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from issuance of bonds | — | — | 
                                                850,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from long-term borrowings | — | — | 
                                                1,425,757,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repayments of long-term borrowings | — | — | 
                                                -561,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -7,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                4,771,646,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -655,521,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | — | 
                                                -21,548,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -8,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                88,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                846,923,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                2,676,233,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,586,486,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,739,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |