Statement Of Cash Flows
| Concept | 2024-10-01 to 2025-03-31 | As at 2025-03-31 | 2023-10-01 to 2024-09-30 | As at 2024-09-30 | 2022-10-01 to 2023-09-30 | As at 2023-09-30 | 
|---|---|---|---|---|---|---|
| Statement of cash flows | ||||||
| Statement of cash flows | ||||||
| Cash flows from operating activities | ||||||
| Profit (loss) before income taxes | 
                                                -246,779,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -885,149,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -652,086,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | 
                                                2,714,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,671,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Impairment losses | 
                                                14,196,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                30,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in allowance for doubtful accounts | 
                                                -297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -9,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividend income | 
                                                -1,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -3,583,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest expenses | 
                                                119,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                379,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in provision for retirement benefits | 
                                                -287,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,897,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in provision for bonuses | 
                                                -6,108,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in trade receivables | 
                                                -90,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                70,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in inventories | 
                                                40,014,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -7,533,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in trade payables | 
                                                -20,208,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -22,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Subtotal | 
                                                -153,939,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -186,447,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | 
                                                -789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,792,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) operating activities | 
                                                -180,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -207,224,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividends received | 
                                                84,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                441,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest paid | 
                                                -112,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from operating activities | ||||||
| Loss (gain) on sale of non-current assets | — | — | 
                                                -66,105,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from operating activities | ||||||
| Increase (decrease) in accounts payable - other | 
                                                33,190,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from investing activities | ||||||
| Purchase of property, plant and equipment | 
                                                -1,472,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -5,686,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from sale of property, plant and equipment | — | — | 
                                                170,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of investment securities | 
                                                -64,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -222,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) investing activities | 
                                                -76,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -25,164,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from facilities maintenance and investing activities | ||||||
| Cash flows from financing activities | ||||||
| Net cash provided by (used in) financing activities | 
                                                -5,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -36,850,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Repayments of long-term borrowings | 
                                                -5,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -13,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net increase (decrease) in cash and cash equivalents | 
                                                -262,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -269,239,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash and cash equivalents | — | 
                                                291,593,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                553,823,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                823,062,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |