| 2024/3 | 2025/3 |
| Assets | | |
| Current assets | | |
| Cash and deposits | 9,928,521 | 10,724,275 |
| Notes and accounts receivable - trade, and contract assets | 8,620,110 | 7,121,580 |
| Work in process | 10,383 | 1,002 |
| Supplies | 8,079 | 4,462 |
| Other | 847,033 | 442,111 |
| Allowance for doubtful accounts | -3,013 | -4,467 |
| Total current assets | 19,411,115 | 18,288,963 |
| Non-current assets | | |
| Property, plant and equipment | | |
| Buildings | 474,026 | 499,781 |
| Accumulated depreciation | -218,182 | -260,571 |
| Buildings, net | 255,844 | 239,210 |
| Vehicles | 29,617 | 29,617 |
| Accumulated depreciation | -27,755 | -28,646 |
| Vehicles, net | 1,861 | 971 |
| Tools, furniture and fixtures | 353,141 | 377,798 |
| Accumulated depreciation | -254,535 | -290,144 |
| Tools, furniture and fixtures, net | 98,605 | 87,653 |
| Total property, plant and equipment | 356,312 | 327,835 |
| Intangible assets | 325,375 | 230,582 |
| Investments and other assets | | |
| Investment securities | 214,681 | 222,709 |
| Deferred tax assets | 278,218 | 285,860 |
| Other | 627,581 | 528,754 |
| Allowance for doubtful accounts | -3,337 | -6,313 |
| Total investments and other assets | 1,117,143 | 1,031,009 |
| Total non-current assets | 1,798,831 | 1,589,427 |
| Total assets | 21,209,946 | 19,878,390 |
| Liabilities | | |
| Current liabilities | | |
| Short-term borrowings | 36,000 | 36,000 |
| Current portion of bonds payable | 20,000 | - |
| Current portion of long-term borrowings | 339,872 | 253,132 |
| Accounts payable - other | 2,964,789 | 2,267,327 |
| Accrued expenses | 416,401 | 377,000 |
| Income taxes payable | 99,007 | 487,402 |
| Accrued consumption taxes | 270,158 | 369,605 |
| Contract liabilities | 194,482 | 79,703 |
| Deposits received | 1,198,503 | 168,392 |
| Provision for bonuses | 318,909 | 292,659 |
| Asset retirement obligations | 1,085 | 16,175 |
| Other | 6,487 | 5,795 |
| Total current liabilities | 5,865,695 | 4,353,194 |
| Non-current liabilities | | |
| Long-term borrowings | 653,164 | 400,032 |
| Retirement benefit liability | 314 | - |
| Asset retirement obligations | 158,829 | 146,357 |
| Other | 56,189 | 65,905 |
| Total non-current liabilities | 868,497 | 612,295 |
| Total liabilities | 6,734,193 | 4,965,490 |
| Net assets | | |
| Shareholders' equity | | |
| Share capital | 405,967 | 412,348 |
| Capital surplus | 247,261 | 253,642 |
| Retained earnings | 14,085,010 | 14,490,479 |
| Treasury shares | -443,764 | -443,771 |
| Total shareholders' equity | 14,294,474 | 14,712,698 |
| Accumulated other comprehensive income | | |
| Valuation difference on available-for-sale securities | 40,173 | 43,455 |
| Total accumulated other comprehensive income | 40,173 | 43,455 |
| Share acquisition rights | 59,720 | 59,103 |
| Non-controlling interests | 81,384 | 97,642 |
| Total net assets | 14,475,753 | 14,912,900 |
| Total liabilities and net assets | 21,209,946 | 19,878,390 |
