| Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 |
|---|
| Cash and deposits | - | 2,073 | 2,413 | 4,437 | 3,874 |
|---|
| Accounts receivable - trade | - | 20 | 58 | 14 | 17 |
|---|
| Merchandise and finished goods | - | 17 | 37 | 30 | 35 |
|---|
| Raw materials | - | 3 | 7 | 10 | 11 |
|---|
| Advance payments to suppliers | - | 1 | 21 | - | 1 |
|---|
| Prepaid expenses | - | 17 | 5 | 18 | 16 |
|---|
| Consumption taxes refund receivable | - | - | - | 56 | 33 |
|---|
| Accounts receivable - other | - | 17 | 0 | 56 | 0 |
|---|
| Other | - | 0 | 0 | 0 | 0 |
|---|
| Current assets | - | 2,152 | 2,559 | 4,565 | 3,987 |
|---|
| Facilities attached to buildings, net | - | 3 | 2 | 130 | 126 |
|---|
| Machinery and equipment, net | - | 22 | 11 | 1 | 0 |
|---|
| Tools, furniture and fixtures, net | - | 7 | 14 | 58 | 44 |
|---|
| Property, plant and equipment | - | 33 | 27 | 189 | 170 |
|---|
| Patent right | - | 5 | 4 | 3 | 3 |
|---|
| Software | - | - | - | 2 | 1 |
|---|
| Other | - | 1 | 1 | 1 | 1 |
|---|
| Intangible assets | - | 6 | 5 | 5 | 4 |
|---|
| Investments in capital | - | 0 | 0 | 0 | 0 |
|---|
| Leasehold and guarantee deposits | - | 6 | 56 | 55 | 53 |
|---|
| Investments and other assets | - | 6 | 56 | 55 | 53 |
|---|
| Non-current assets | - | 44 | 88 | 250 | 227 |
|---|
| Assets | - | 2,196 | 2,646 | 4,815 | 4,215 |
|---|
| Accounts payable - trade | - | 1 | 8 | 3 | 1 |
|---|
| Short-term borrowings | - | 50 | 129 | 467 | 550 |
|---|
| Current portion of long-term borrowings | - | 23 | 72 | 78 | 18 |
|---|
| Accounts payable - other | - | 28 | 43 | 46 | 31 |
|---|
| Accrued expenses | - | 5 | 6 | 26 | 20 |
|---|
| Income taxes payable | - | 2 | 2 | 29 | 17 |
|---|
| Advances received | - | 51 | 60 | - | 2 |
|---|
| Deposits received | - | 5 | 8 | 12 | 8 |
|---|
| Unearned revenue | - | 26 | 19 | 22 | 19 |
|---|
| Current liabilities | - | 207 | 386 | 683 | 666 |
|---|
| Long-term borrowings | - | 432 | 360 | 363 | 345 |
|---|
| Non-current liabilities | - | 440 | 360 | 363 | 345 |
|---|
| Liabilities | - | 647 | 746 | 1,046 | 1,011 |
|---|
| Share capital | - | 100 | 100 | 1,272 | 1,283 |
|---|
| Legal capital surplus | - | 2,618 | 2,722 | 3,894 | 3,905 |
|---|
| Capital surplus | - | 2,618 | 2,722 | 3,894 | 3,905 |
|---|
| Retained earnings brought forward | - | -1,170 | -923 | -1,397 | -1,986 |
|---|
| Retained earnings | - | -1,170 | -923 | -1,397 | -1,986 |
|---|
| Shareholders' equity | - | 1,548 | 1,899 | 3,769 | 3,203 |
|---|
| Share acquisition rights | - | 1 | 1 | 1 | 1 |
|---|
| Net assets | 1,779 | 1,549 | 1,900 | 3,770 | 3,203 |
|---|
| Liabilities and net assets | - | 2,196 | 2,646 | 4,815 | 4,215 |
|---|