Semi-Annual Statement Of Cash Flows
| Concept | 2024-04-01 to 2024-09-30 | As at 2024-09-30 | As at 2024-03-31 | 2023-04-01 to 2023-09-30 | As at 2023-09-30 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|
| Semi-annual statement of cash flows | ||||||
| Statement of cash flows | ||||||
| Cash flows from operating activities | ||||||
| Subtotal | 
                                                721,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -270,591,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | 
                                                151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                15,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | 
                                                -302,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -125,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | 
                                                -2,745,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -227,624,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | 
                                                718,657,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -498,326,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | ||||||
| Purchase of property, plant and equipment | 
                                                -147,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -105,214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Proceeds from sale of property, plant and equipment | 
                                                1,451,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | 
                                                -222,513,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -134,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | ||||||
| Dividends paid | 
                                                -521,252,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -312,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | 
                                                -522,453,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -311,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | 
                                                -2,548,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                5,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | 
                                                -28,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -937,783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | — | 
                                                7,460,546,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,489,404,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                7,676,440,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,614,223,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |