Semi-Annual 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 | 
|---|---|---|---|---|---|---|---|
| Semi-annual statement of cash flows | |||||||
| Statement of cash flows | |||||||
| Cash flows from operating activities | |||||||
| Profit (loss) before income taxes | 
                                                1,239,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,483,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,710,194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,559,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                262,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                244,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Impairment losses | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in allowance for doubtful accounts | — | — | 
                                                -863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividend income | — | — | 
                                                -68,950,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -60,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest expenses | — | — | 
                                                14,873,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Loss (gain) on sale of property, plant and equipment | — | — | 
                                                -190,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in provision for bonuses | — | — | 
                                                273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,583,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in trade receivables | — | — | 
                                                325,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,229,239,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in inventories | — | — | 
                                                -253,725,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -384,804,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in trade payables | — | — | 
                                                -1,795,161,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,030,602,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                270,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                116,969,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Subtotal | — | — | 
                                                365,815,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                479,098,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividends received | — | — | 
                                                68,689,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                60,676,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest paid | — | — | 
                                                -15,079,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,026,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Income taxes paid | — | — | 
                                                -504,882,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -530,234,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                -85,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,514,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from investing activities | |||||||
| Purchase of securities | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of property, plant and equipment | — | — | 
                                                -155,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -141,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from sale of property, plant and equipment | — | — | 
                                                3,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of investment securities | — | — | 
                                                -925,725,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -310,262,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from sale of investment securities | — | — | 
                                                136,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                103,497,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Loan advances | — | — | 
                                                -50,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from collection of loans receivable | — | — | 
                                                500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -429,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -263,904,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from financing activities | |||||||
| Proceeds from long-term borrowings | — | — | 
                                                400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Repayments of long-term borrowings | — | — | 
                                                -400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Dividends paid | — | — | 
                                                -442,136,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -367,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                -446,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -371,544,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,865,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                -960,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -630,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash and cash equivalents | — | 
                                                4,399,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                5,359,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,989,929,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |