| Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 |
|---|
| Profit (loss) before income taxes | -1,891 | -1,354 | -739 |
|---|
| Depreciation | 3 | 19 | 5 |
|---|
| Increase (decrease) in allowance for doubtful accounts | 5 | -0 | 2 |
|---|
| Increase (decrease) in provision for bonuses | 4 | 3 | 9 |
|---|
| Increase (decrease) in provision for bonuses for directors (and other officers) | -10 | -10 | - |
|---|
| Interest and dividend income | -0 | -0 | -0 |
|---|
| Interest expenses | 21 | 11 | 15 |
|---|
| Share issuance costs | - | 3 | 11 |
|---|
| Listing expenses | - | - | 29 |
|---|
| Decrease (increase) in notes and accounts receivable - trade and contract assets | -92 | -53 | -13 |
|---|
| Decrease (increase) in inventories | -9 | -118 | -70 |
|---|
| Decrease (increase) in prepaid expenses | -11 | -15 | -56 |
|---|
| Increase (decrease) in trade payables | 26 | 7 | -9 |
|---|
| Increase (decrease) in accounts payable - other | 165 | -121 | -19 |
|---|
| Increase (decrease) in accrued expenses | 25 | 11 | 62 |
|---|
| Increase (decrease) in contract liabilities | 44 | 59 | 9 |
|---|
| Increase Decrease In repayment Liabilities | 1 | 1 | 0 |
|---|
| Decrease (increase) in other current assets | -119 | 64 | -3 |
|---|
| Increase (decrease) in other current liabilities | 7 | 18 | 128 |
|---|
| Other, net | 9 | 2 | -12 |
|---|
| Subtotal | -1,822 | -1,472 | -650 |
|---|
| Interest and dividends received | 0 | 0 | 0 |
|---|
| Interest paid | -20 | -11 | -15 |
|---|
| Income taxes refund | - | 16 | - |
|---|
| Income taxes paid | -34 | -5 | -3 |
|---|
| Net cash provided by (used in) operating activities | -1,876 | -1,472 | -668 |
|---|
| Payments into time deposits | -80 | -40 | -40 |
|---|
| Proceeds from withdrawal of time deposits | 110 | 80 | 40 |
|---|
| Purchase of property, plant and equipment | -31 | -7 | -1 |
|---|
| Purchase of intangible assets | - | - | -1 |
|---|
| Purchase of investment securities | - | - | -3 |
|---|
| Payments of leasehold and guarantee deposits | -48 | -1 | -10 |
|---|
| Proceeds from refund of leasehold and guarantee deposits | 1 | 63 | 14 |
|---|
| Net cash provided by (used in) investing activities | -49 | 95 | -1 |
|---|
| Proceeds from long-term borrowings | - | 700 | 400 |
|---|
| Repayments of long-term borrowings | -767 | -349 | -368 |
|---|
| Proceeds from issuance of stocks | - | 596 | 980 |
|---|
| Payments of listing expenses | - | - | -29 |
|---|
| Other, net | -1 | -1 | -2 |
|---|
| Net cash provided by (used in) financing activities | -786 | 947 | 980 |
|---|
| Net increase (decrease) in cash and cash equivalents | -2,710 | -430 | 311 |
|---|