| Mar 31,
2017 | Mar 31,
2018 | Mar 31,
2019 | Mar 31,
2020 | Mar 31,
2021 | Mar 31,
2022 | Mar 31,
2023 | Mar 31,
2024 |
|---|
| Cash and deposits | - | - | - | - | - | - | 33 | 3,951 |
|---|
| Notes receivable - trade | - | - | - | - | - | - | 81 | 140 |
|---|
| Accounts receivable - trade | - | - | - | - | - | - | 2,119 | 3,050 |
|---|
| Advance payments to suppliers | - | - | - | - | - | - | 55 | 51 |
|---|
| Prepaid expenses | - | - | - | - | - | - | 194 | 303 |
|---|
| Short-term loans receivable | - | - | - | - | - | - | 25,502 | 19,367 |
|---|
| Other | - | - | - | - | - | - | 26 | 125 |
|---|
| Current assets | - | - | - | - | - | - | 28,015 | 26,990 |
|---|
| Facilities attached to buildings | - | - | - | - | - | - | 274 | 259 |
|---|
| Tools, furniture and fixtures, net | - | - | - | - | - | - | 261 | 234 |
|---|
| Property, plant and equipment | - | - | - | - | - | - | 535 | 493 |
|---|
| Goodwill | - | - | - | - | - | - | 1,368 | 16,280 |
|---|
| Software | - | - | - | - | - | - | 1,120 | 1,248 |
|---|
| Software in progress | - | - | - | - | - | - | 179 | 286 |
|---|
| Intangible assets | - | - | - | - | - | - | 2,668 | 17,815 |
|---|
| Investment securities | - | - | - | - | - | - | 588 | 572 |
|---|
| Shares of subsidiaries and associates | - | - | - | - | - | - | 40,812 | 44,195 |
|---|
| Leasehold and guarantee deposits | - | - | - | - | - | - | 437 | 456 |
|---|
| Long-term prepaid expenses | - | - | - | - | - | - | 64 | 103 |
|---|
| Deferred tax assets | - | - | - | - | - | - | 99 | 241 |
|---|
| Investments and other assets | - | - | - | - | - | - | 42,002 | 45,568 |
|---|
| Non-current assets | - | - | - | - | - | - | 45,207 | 63,876 |
|---|
| Assets | 4,573 | 5,254 | 18,965 | 26,944 | 58,264 | 62,053 | 98,567 | 122,452 |
|---|
| Accounts payable - trade | - | - | - | - | - | - | 53 | 56 |
|---|
| Short-term borrowings | - | - | - | - | - | - | - | 16,400 |
|---|
| Current portion of long-term borrowings | - | - | - | - | - | - | 843 | 6,364 |
|---|
| Accounts payable - other | - | - | - | - | - | - | 607 | 835 |
|---|
| Accrued expenses | - | - | - | - | - | - | 26 | 26 |
|---|
| Income taxes payable | - | - | - | - | - | - | 371 | 97 |
|---|
| Contract liabilities | - | - | - | - | - | - | 622 | 484 |
|---|
| Deposits received | - | - | - | - | - | - | 49 | 49 |
|---|
| Provision for bonuses | - | - | - | - | - | - | 110 | 120 |
|---|
| Other | - | - | - | - | - | - | 13 | 10 |
|---|
| Current liabilities | - | - | - | - | - | - | 2,697 | 24,446 |
|---|
| Long-term borrowings | - | - | - | - | - | - | 10,534 | 5,408 |
|---|
| Asset retirement obligations | - | - | - | - | - | - | 146 | 146 |
|---|
| Non-current liabilities | - | - | - | - | - | - | 10,680 | 5,554 |
|---|
| Liabilities | 3,211 | 3,502 | 12,848 | 13,821 | 30,013 | 30,887 | 34,042 | 51,765 |
|---|
| Share capital | - | - | - | - | - | - | 23,994 | 25,099 |
|---|
| Legal capital surplus | - | - | - | - | - | - | 30,495 | 31,601 |
|---|
| Other capital surplus | - | - | - | - | - | - | 336 | 336 |
|---|
| Capital surplus | - | - | - | - | - | - | 30,831 | 31,937 |
|---|
| Retained earnings brought forward | - | - | - | - | - | - | 4,988 | 3,803 |
|---|
| Retained earnings | 917 | 1,307 | 2,317 | 3,847 | 6,323 | 9,580 | 13,308 | 17,166 |
|---|
| Treasury shares | - | - | - | - | - | - | -2 | -3 |
|---|
| Shareholders' equity | - | - | - | - | - | - | 59,811 | 60,836 |
|---|
| Share acquisition rights | - | - | - | - | - | - | 32 | 30 |
|---|
| Net assets | - | - | - | - | - | 29,273 | 59,843 | 60,867 |
|---|
| Liabilities and net assets | - | - | - | - | - | - | 73,222 | 90,867 |
|---|