Quarterly Statement Of Cash Flows
| Concept | As at 2024-02-29 | 2023-09-01 to 2024-02-29 | As at 2023-08-31 | 2022-09-01 to 2023-08-31 | As at 2022-08-31 | 2021-09-01 to 2022-08-31 | As at 2021-08-31 | 
|---|---|---|---|---|---|---|---|
| Quarterly statement of cash flows | |||||||
| Statement of cash flows | |||||||
| Cash flows from operating activities | |||||||
| Profit (loss) before income taxes | — | 
                                                -801,401,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                225,761,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,776,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | 
                                                2,111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | 
                                                -148,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                227,720,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -130,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Subtotal | — | 
                                                -1,067,245,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                536,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,718,140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -2,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,900,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                -1,052,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                543,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,704,131,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||||
| Purchase of property, plant and equipment | — | 
                                                -178,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -347,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -8,744,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | — | — | 
                                                1,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -178,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -14,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||||
| Proceeds from issuance of shares | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,975,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,975,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -1,052,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                544,077,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,256,809,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                3,746,373,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,799,035,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,254,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,998,149,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |