| Mar 31,
2021 | Mar 31,
2022 | Mar 31,
2023 | Mar 31,
2024 |
|---|
| Cash and deposits | - | 1,635 | 1,844 | 3,324 |
|---|
| Accounts receivable - trade | - | 539 | 616 | 719 |
|---|
| Merchandise | - | 20 | 25 | 32 |
|---|
| Supplies | - | 6 | 8 | 0 |
|---|
| Prepaid expenses | - | 109 | 99 | 129 |
|---|
| Other | - | 13 | 2 | 9 |
|---|
| Allowance for doubtful accounts | - | -3 | -2 | -3 |
|---|
| Current assets | - | 2,320 | 2,593 | 4,210 |
|---|
| Facilities attached to buildings | - | 64 | 65 | 65 |
|---|
| Tools, furniture and fixtures | - | 104 | 130 | 149 |
|---|
| Accumulated depreciation | - | -67 | -96 | -122 |
|---|
| Property, plant and equipment | - | 102 | 99 | 92 |
|---|
| Software | - | 8 | 18 | 18 |
|---|
| Software in progress | - | - | - | 276 |
|---|
| Other | - | 0 | 0 | 10 |
|---|
| Intangible assets | - | 8 | 18 | 304 |
|---|
| Investment securities | - | 1 | 1 | 1 |
|---|
| Long-term prepaid expenses | - | 15 | 8 | 4 |
|---|
| Distressed receivables | - | - | 0 | 0 |
|---|
| Long-term prepaid expenses | - | 15 | 8 | 4 |
|---|
| Deferred tax assets | - | 77 | 192 | 208 |
|---|
| Distressed receivables | - | - | 0 | 0 |
|---|
| Other | - | 70 | 70 | 69 |
|---|
| Deferred tax assets | - | 77 | 192 | 208 |
|---|
| Allowance for doubtful accounts | - | - | -0 | -0 |
|---|
| Other | - | 70 | 70 | 69 |
|---|
| Investments and other assets | - | 163 | 271 | 282 |
|---|
| Allowance for doubtful accounts | - | - | -0 | -0 |
|---|
| Investments and other assets | - | 163 | 271 | 282 |
|---|
| Non-current assets | - | 272 | 388 | 677 |
|---|
| Assets | - | 2,592 | 2,981 | 4,887 |
|---|
| Accounts payable - trade | - | 41 | 97 | 118 |
|---|
| Short-term borrowings | - | - | 180 | - |
|---|
| Current portion of long-term borrowings | - | 69 | 50 | 27 |
|---|
| Accounts payable - other | - | 12 | 17 | 88 |
|---|
| Accrued expenses | - | 223 | 247 | 322 |
|---|
| Income taxes payable | - | 74 | 111 | 111 |
|---|
| Contract liabilities | - | 135 | 137 | 98 |
|---|
| Provision for bonuses | - | 73 | 93 | 104 |
|---|
| Provision for bonuses | - | 73 | 93 | 104 |
|---|
| Other | - | 79 | 94 | 128 |
|---|
| Other | - | 79 | 94 | 128 |
|---|
| Current liabilities | - | 705 | 1,024 | 996 |
|---|
| Current liabilities | - | 705 | 1,024 | 996 |
|---|
| Long-term borrowings | - | 71 | 22 | - |
|---|
| Non-current liabilities | - | 71 | 22 | - |
|---|
| Liabilities | - | 777 | 1,046 | 996 |
|---|
| Share capital | - | 20 | 20 | 861 |
|---|
| Capital surplus | - | - | - | 841 |
|---|
| Capital surplus | - | - | - | 841 |
|---|
| Retained earnings | - | 1,795 | 1,904 | 2,168 |
|---|
| Retained earnings | - | 1,795 | 1,904 | 2,168 |
|---|
| Shareholders' equity | - | 1,815 | 1,924 | 3,869 |
|---|
| Net assets | 1,378 | 1,815 | 1,935 | 3,892 |
|---|
| Foreign currency translation adjustment | - | 1 | 11 | 23 |
|---|
| Valuation and translation adjustments | - | 1 | 11 | 23 |
|---|
| Net assets | 1,378 | 1,815 | 1,935 | 3,892 |
|---|
| Liabilities and net assets | - | 2,592 | 2,981 | 4,887 |
|---|