Statement Of Cash Flows
| Concept | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|---|
| Statement of cash flows | |||||||
| Statement of cash flows | |||||||
| Cash flows from operating activities | |||||||
| Profit (loss) before income taxes | 
                                                23,974,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                21,570,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,369,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                28,533,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                4,066,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,704,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Impairment losses | — | — | 
                                                75,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                168,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in allowance for doubtful accounts | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividend income | — | — | 
                                                -573,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -419,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest expenses | — | — | 
                                                144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Foreign exchange losses (gains) | — | — | 
                                                702,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,626,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in provision for bonuses | — | — | 
                                                340,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -151,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in trade receivables | — | — | 
                                                716,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,088,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in inventories | — | — | 
                                                2,452,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,859,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in trade payables | — | — | 
                                                -271,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,933,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Subtotal | — | — | 
                                                24,741,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,732,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Income taxes paid | — | — | 
                                                -9,749,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,495,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -1,618,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                174,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                15,286,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,607,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividends received | — | — | 
                                                386,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                390,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest paid | — | — | 
                                                -91,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from operating activities | |||||||
| Loss (gain) on sale of investment securities | — | — | 
                                                -2,027,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from operating activities | |||||||
| Cash flows from investing activities | |||||||
| Purchase of property, plant and equipment | — | — | 
                                                -7,126,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,626,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from sale of property, plant and equipment | — | — | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of investment securities | — | — | 
                                                -60,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -72,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -25,138,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,208,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from sale of investment securities | — | — | 
                                                2,222,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                277,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -371,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from facilities maintenance and investing activities | |||||||
| Cash flows from financing activities | |||||||
| Purchase of treasury shares | — | — | 
                                                -10,001,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,124,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Dividends paid | — | — | 
                                                -5,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,968,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                2,550,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,968,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | — | 
                                                485,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,458,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                -6,816,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,889,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash and cash equivalents | — | 
                                                43,061,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                49,877,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                43,988,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |