Quarterly Statement Of Cash Flows
| Concept | As at 2024-09-30 | 2023-10-01 to 2024-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2022-09-30 | 
|---|---|---|---|---|---|
| Quarterly statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Subtotal | — | 
                                                786,012,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                284,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -146,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -89,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                639,424,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                195,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -22,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -69,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from sale of property, plant and equipment | — | 
                                                2,825,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -36,823,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -65,937,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||
| Proceeds from issuance of shares | — | 
                                                374,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                374,997,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                977,598,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                129,261,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                2,226,662,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,249,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,119,802,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |