Consolidated Statement Of Cash Flows
| Concept | As at 2024-08-31 | 2024-03-01 to 2024-08-31 | As at 2024-02-29 | 2023-03-01 to 2023-08-31 | As at 2023-08-31 | As at 2023-02-28 | 
|---|---|---|---|---|---|---|
| Consolidated statement of cash flows | ||||||
| Statement of cash flows | ||||||
| Cash flows from operating activities | ||||||
| Subtotal | — | 
                                                372,851,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                483,645,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest and dividends received | — | 
                                                133,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                23,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes paid | — | 
                                                -217,257,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -281,436,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest paid | — | 
                                                -20,922,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -19,085,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) operating activities | — | 
                                                137,386,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                183,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from investing activities | ||||||
| Purchase of property, plant and equipment | — | 
                                                -18,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -34,895,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -125,962,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -139,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash flows from financing activities | ||||||
| Proceeds from issuance of shares | — | 
                                                12,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                32,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Repayments of long-term borrowings | — | 
                                                -200,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -150,125,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -198,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -118,115,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | 
                                                67,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                71,871,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                -119,506,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -2,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cash and cash equivalents | 
                                                4,188,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                4,307,529,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,873,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,875,390,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |