Quarterly Statement Of Cash Flows
| Concept | As at 2024-06-30 | 2023-07-01 to 2024-06-30 | As at 2023-06-30 | 2022-07-01 to 2023-06-30 | As at 2022-06-30 | 
|---|---|---|---|---|---|
| Quarterly statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Profit (loss) before income taxes | — | 
                                                343,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                202,099,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | 
                                                42,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                37,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividend income | — | 
                                                -512,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -499,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest expenses | — | 
                                                1,153,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                77,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in inventories | — | 
                                                -9,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                437,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in trade payables | — | 
                                                -933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -4,810,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | 
                                                10,977,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Subtotal | — | 
                                                288,433,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                152,207,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | — | 
                                                512,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                499,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | 
                                                -1,145,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -96,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -2,290,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,290,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                285,510,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                150,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -2,096,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -4,060,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -37,048,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -36,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||
| Repayments of long-term borrowings | — | 
                                                -62,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -60,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from issuance of shares | — | 
                                                2,063,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of treasury shares | — | 
                                                -179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                1,980,215,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -60,100,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                2,228,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                53,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                2,900,488,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                671,809,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                618,463,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |