Semi-Annual Consolidated Statement Of Cash Flows
| Concept | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2023-03-31 | 2022-04-01 to 2023-03-31 | As at 2022-03-31 | 
|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | |||||
| Statement of cash flows | |||||
| Cash flows from operating activities | |||||
| Profit (loss) before income taxes | — | 
                                                1,272,893,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,087,739,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | 
                                                32,982,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                31,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest expenses | — | 
                                                140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in provision for bonuses | — | 
                                                3,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                23,781,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in trade receivables | — | 
                                                -203,993,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -184,676,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in inventories | — | 
                                                2,440,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,840,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in trade payables | — | 
                                                -61,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -1,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | 
                                                25,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                14,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Subtotal | — | 
                                                1,126,567,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                962,401,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | 
                                                -141,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | 
                                                -354,255,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -444,767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                772,202,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                517,492,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||
| Purchase of property, plant and equipment | — | 
                                                -18,362,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -48,034,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | 
                                                -91,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -302,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||
| Proceeds from issuance of shares | — | 
                                                1,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                6,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Dividends paid | — | 
                                                -98,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -95,516,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | 
                                                -110,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                -101,209,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | 
                                                569,444,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                113,310,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                2,658,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                2,001,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,888,588,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |