| 2025/3 | 2026/3 |
| Assets | | |
| Current assets | | |
| Cash and deposits | 12,013,854 | 12,309,004 |
| Notes and accounts receivable - trade, and contract assets | 2,410,493 | 1,906,912 |
| Electronically recorded monetary claims - operating | 236,902 | 50,338 |
| Merchandise and finished goods | 50,551 | 140,904 |
| Work in process | 1,861,511 | 1,380,933 |
| Raw materials and supplies | 715,923 | 860,979 |
| Advance payments to suppliers | 327,337 | 18,791 |
| Other | 409,967 | 178,574 |
| Allowance for doubtful accounts | -4,371 | -1,018 |
| Total current assets | 18,022,170 | 16,845,421 |
| Non-current assets | | |
| Property, plant and equipment | | |
| Buildings and structures, net | 640,317 | 703,164 |
| Machinery, equipment and vehicles, net | 196,247 | 163,197 |
| Land | 722,733 | 722,733 |
| Construction in progress | 53,947 | 546,840 |
| Other, net | 143,353 | 275,731 |
| Total property, plant and equipment | 1,756,599 | 2,411,668 |
| Intangible assets | | |
| Other | 31,181 | 68,060 |
| Total intangible assets | 31,181 | 68,060 |
| Investments and other assets | | |
| Investment securities | 1,079,200 | 1,546,000 |
| Deferred tax assets | 55,672 | 64,882 |
| Other | 345,408 | 259,641 |
| Allowance for doubtful accounts | -120,890 | -87,962 |
| Total investments and other assets | 1,359,390 | 1,782,561 |
| Total non-current assets | 3,147,171 | 4,262,290 |
| Total assets | 21,169,342 | 21,107,711 |
| Liabilities | | |
| Current liabilities | | |
| Notes and accounts payable - trade | 816,507 | 1,110,353 |
| Electronically recorded obligations - operating | 68,059 | - |
| Current portion of long-term borrowings | 8,580 | 8,580 |
| Income taxes payable | 12,986 | 741,612 |
| Contract liabilities | 2,886,598 | 423,961 |
| Provision for bonuses | 217,726 | 343,636 |
| Provision for product warranties | 9,746 | 8,117 |
| Provision for loss on construction contracts | 124,022 | 4,199 |
| Other | 662,647 | 844,523 |
| Total current liabilities | 4,806,875 | 3,484,984 |
| Non-current liabilities | | |
| Long-term borrowings | 42,125 | 33,545 |
| Deferred tax liabilities | 153,343 | 172,656 |
| Other | 60,164 | 143,653 |
| Total non-current liabilities | 255,632 | 349,854 |
| Total liabilities | 5,062,507 | 3,834,839 |
| Net assets | | |
| Shareholders' equity | | |
| Share capital | 2,133,177 | 2,133,177 |
| Capital surplus | 2,572,667 | 2,575,192 |
| Retained earnings | 11,964,861 | 12,857,936 |
| Treasury shares | -1,166,575 | -1,165,601 |
| Total shareholders' equity | 15,504,131 | 16,400,705 |
| Accumulated other comprehensive income | | |
| Valuation difference on available-for-sale securities | 602,703 | 874,471 |
| Foreign currency translation adjustment | - | -2,304 |
| Total accumulated other comprehensive income | 602,703 | 872,166 |
| Total net assets | 16,106,834 | 17,272,872 |
| Total liabilities and net assets | 21,169,342 | 21,107,711 |