| 2024/3 | 2025/3 |
| Cash flows from operating activities | | |
| Profit before income taxes | 625,771 | 287,856 |
| Depreciation | 309,520 | 356,442 |
| Amortization of goodwill | 18,700 | 18,700 |
| Increase (decrease) in retirement benefit liability | -64,740 | -26,506 |
| Increase (decrease) in allowance for doubtful accounts | -2,246 | -1,460 |
| Increase (decrease) in provision for bonuses | -6,125 | 3,987 |
| Increase (decrease) in provision for warranties for completed construction | -23,252 | -7,744 |
| Increase (decrease) in provision for loss on liquidation of subsidiaries | -8,320 | - |
| Interest and dividend income | -52,791 | -58,972 |
| Interest expenses | 7,354 | 20,768 |
| Loss (gain) on sale of investment securities | -23,967 | -26,314 |
| Loss (gain) on sale and retirement of non-current assets | 2,576 | 79,147 |
| Decrease (increase) in trade receivables | -607,746 | 1,068,207 |
| Decrease (increase) in inventories | 57,475 | 215,570 |
| Increase (decrease) in trade payables | 674,409 | -1,086,585 |
| Loss (gain) on valuation of investment securities | - | 1,106 |
| Increase (decrease) in accrued expenses | 8,390 | -92,095 |
| Other, net | 216,902 | -62,304 |
| Subtotal | 1,131,910 | 689,804 |
| Interest and dividends received | 52,791 | 58,906 |
| Interest paid | -7,592 | -22,200 |
| Income taxes paid | -94,032 | -231,204 |
| Net cash provided by (used in) operating activities | 1,083,076 | 495,306 |
| Cash flows from investing activities | | |
| Net decrease (increase) in time deposits | 11,999 | -6,005 |
| Purchase of property, plant and equipment | -213,506 | -212,769 |
| Purchase of intangible assets | -351,481 | -33,432 |
| Purchase of investment securities | -11,877 | -54,889 |
| Proceeds from sale of investment securities | 29,105 | 534,522 |
| Payments of leasehold and guarantee deposits | -8,585 | -1,249 |
| Payments for retirement of property, plant and equipment | - | -78,204 |
| Other, net | -7,886 | -2,532 |
| Net cash provided by (used in) investing activities | -552,231 | 145,438 |
| Cash flows from financing activities | | |
| Net increase (decrease) in short-term borrowings | -400,000 | -400,000 |
| Proceeds from long-term borrowings | 400,000 | 270,000 |
| Repayments of long-term borrowings | -28,500 | -219,026 |
| Redemption of bonds | -172,200 | -101,600 |
| Repayments of lease liabilities | -42,662 | -25,021 |
| Dividends paid | -200,245 | -200,764 |
| Other, net | -0 | -0 |
| Net cash provided by (used in) financing activities | -443,608 | -676,412 |
| Effect of exchange rate change on cash and cash equivalents | 22,657 | 34,481 |
| Net increase (decrease) in cash and cash equivalents | 109,893 | -1,186 |
| Cash and cash equivalents at beginning of period | 3,932,514 | 4,042,408 |
| Cash and cash equivalents at end of period | 4,042,408 | 4,041,221 |