| Mar 31,
2021 | Mar 31,
2022 | Mar 31,
2023 | Mar 31,
2024 |
|---|
| Cash and deposits | - | 3,855 | 4,016 | 5,708 |
|---|
| Accounts receivable - trade | - | 1,500 | 1,700 | 1,920 |
|---|
| Real estate for sale | - | - | 1,729 | 2,244 |
|---|
| Real estate for sale in process | - | 1,916 | 1,876 | 1,100 |
|---|
| Supplies | - | 6 | 5 | 6 |
|---|
| Advance payments to suppliers | - | 22 | 72 | 28 |
|---|
| Prepaid expenses | - | 148 | 201 | 315 |
|---|
| Other | - | 43 | 61 | 48 |
|---|
| Allowance for doubtful accounts | - | -1 | -3 | -3 |
|---|
| Current assets | - | 7,491 | 9,657 | 11,365 |
|---|
| Buildings, net | - | 522 | 1,685 | 613 |
|---|
| Structures, net | - | 11 | 78 | 7 |
|---|
| Vehicles, net | - | - | - | - |
|---|
| Furniture and fixtures, net | - | 84 | 74 | 111 |
|---|
| Land | - | 2,162 | 1,965 | 1,847 |
|---|
| Leased assets, net | - | 5 | 2 | - |
|---|
| Construction in progress | - | 383 | 15 | 575 |
|---|
| Property, plant and equipment | - | 3,167 | 3,817 | 3,153 |
|---|
| Leasehold interests in land | - | 54 | 54 | 54 |
|---|
| Software | - | 44 | 43 | 34 |
|---|
| Other | - | 6 | 6 | 5 |
|---|
| Intangible assets | - | 104 | 102 | 93 |
|---|
| Investments in capital | - | 0 | 0 | 0 |
|---|
| Guarantee deposits | - | 697 | 721 | 905 |
|---|
| Long-term prepaid expenses | - | 42 | 107 | 20 |
|---|
| Deferred tax assets | - | 281 | 316 | 390 |
|---|
| Other | - | 31 | 23 | 27 |
|---|
| Investments and other assets | - | 1,052 | 1,168 | 1,342 |
|---|
| Non-current assets | - | 4,323 | 5,087 | 4,588 |
|---|
| Assets | - | 11,814 | 14,745 | 15,952 |
|---|
| Accounts payable - trade | - | 369 | 310 | 376 |
|---|
| Short-term borrowings | - | 1,876 | 2,058 | 485 |
|---|
| Current portion of bonds payable | - | 50 | 50 | 20 |
|---|
| Current portion of long-term borrowings | - | 315 | 414 | 1,665 |
|---|
| Lease liabilities | - | 3 | 2 | - |
|---|
| Accounts payable - other | - | 331 | 358 | 138 |
|---|
| Accrued expenses | - | 368 | 364 | 438 |
|---|
| Income taxes payable | - | 70 | 101 | 336 |
|---|
| Contract liabilities | - | 3,201 | 4,600 | 5,264 |
|---|
| Advances received | - | 12 | 14 | 17 |
|---|
| Deposits received | - | 64 | 19 | 70 |
|---|
| Unearned revenue | - | 0 | 0 | 0 |
|---|
| Provision for bonuses | - | 158 | 195 | 189 |
|---|
| Other | - | 59 | 13 | 141 |
|---|
| Current liabilities | - | 6,877 | 8,497 | 9,141 |
|---|
| Bonds payable | - | 70 | 20 | - |
|---|
| Long-term borrowings | - | 2,816 | 3,943 | 3,486 |
|---|
| Long-term unearned revenue | - | 2 | 2 | 2 |
|---|
| Other | - | 364 | 417 | 943 |
|---|
| Non-current liabilities | - | 3,253 | 4,383 | 4,431 |
|---|
| Liabilities | - | 10,131 | 12,880 | 13,572 |
|---|
| Share capital | - | 123 | 123 | 123 |
|---|
| Legal capital surplus | - | 83 | 83 | 83 |
|---|
| Capital surplus | - | 83 | 83 | 83 |
|---|
| Legal retained earnings | - | 12 | 12 | 12 |
|---|
| Reserve for special depreciation | - | 6 | 3 | - |
|---|
| Retained earnings brought forward | - | 1,460 | 1,645 | 2,163 |
|---|
| Retained earnings | - | 1,478 | 1,659 | 2,174 |
|---|
| Shareholders' equity | - | 1,684 | 1,865 | 2,380 |
|---|
| Net assets | 1,553 | 1,684 | 1,865 | 2,380 |
|---|
| Liabilities and net assets | - | 11,814 | 14,745 | 15,952 |
|---|