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 | — | 
                                                198,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,404,020,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,343,125,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,484,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                57,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                25,974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest expenses | — | — | 
                                                1,208,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in trade receivables | — | — | 
                                                -228,268,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -133,271,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | — | 
                                                126,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                346,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Subtotal | — | — | 
                                                8,541,763,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                5,038,234,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | — | 
                                                -1,135,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | — | 
                                                -3,062,737,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,078,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                5,479,018,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,959,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||||
| Purchase of property, plant and equipment | — | — | 
                                                -156,444,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -62,879,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -308,340,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -400,202,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||||
| Repayments of long-term borrowings | — | — | 
                                                -45,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -38,445,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of treasury shares | — | — | 
                                                -2,505,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -774,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                -2,426,432,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -110,481,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                2,744,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,449,107,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                10,174,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                7,430,428,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                3,981,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |