| Feb 28,
2018 | Feb 28,
2019 | Feb 29,
2020 | Feb 28,
2021 | Feb 28,
2022 | Feb 28,
2023 | Feb 29,
2024 |
|---|
| Profit (loss) before income taxes | 373 | 156 | -37 | -709 | -590 | -191 | -256 |
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| Depreciation | 73 | 115 | 130 | 149 | 79 | 67 | 58 |
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| Amortization of goodwill | - | 40 | - | 182 | 182 | 46 | - |
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| Increase (decrease) in allowance for doubtful accounts | -31 | -3 | -3 | -1 | 1 | 2 | 161 |
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| Increase (decrease) in provision for bonuses | - | - | - | - | - | 2 | 4 |
|---|
| Increase (decrease) in provision for warranties for construction | 1 | 0 | -1 | 0 | 7 | -8 | -1 |
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| Interest and dividend income | -0 | -0 | -0 | -0 | -0 | -3 | -7 |
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| Subsidy income | - | - | - | -14 | -3 | -1 | - |
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| Interest expenses | 3 | 2 | 2 | 6 | 7 | 12 | 8 |
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| Gain on bargain purchase | - | - | - | - | - | -2 | - |
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| Loss (gain) on sale of property, plant and equipment | - | - | - | 0 | -21 | -2 | -2 |
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| Loss (gain) on sale of investment securities | - | - | - | - | -42 | -1 | - |
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| Loss (gain) on sale of shares of subsidiaries and associates | - | - | - | - | - | -5 | -64 |
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| Loss (gain) on valuation of investment securities | - | - | - | - | - | - | 0 |
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| Investment crypto asset valuation loss | - | - | - | - | - | - | 71 |
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| Loss on valuation of shares of subsidiaries and associates | - | - | - | - | - | - | 1 |
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| Decrease (increase) in trade receivables | -215 | 6 | -11 | -64 | 100 | -363 | 143 |
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| Decrease (increase) in inventories | -40 | -13 | 0 | -44 | 22 | 47 | 12 |
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| Decrease (increase) in prepaid expenses | - | - | 19 | 82 | -1 | -8 | -48 |
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| Decrease (increase) in accounts receivable - other | - | - | - | - | -15 | -142 | 190 |
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| Decrease (increase) in other current assets | - | - | -59 | 159 | -55 | -28 | 23 |
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| Increase (decrease) in trade payables | 33 | 7 | 6 | -15 | 3 | 32 | 29 |
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| Increase (decrease) in accounts payable - other | 82 | -46 | 39 | 133 | -192 | 256 | -61 |
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| Increase (decrease) in deposits received | - | - | - | - | 127 | 147 | -291 |
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| Increase (decrease) in other current liabilities | - | - | - | - | 122 | 49 | -13 |
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| Other, net | 59 | 29 | 59 | 16 | -33 | 43 | 11 |
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| Subtotal | 337 | 293 | 161 | 149 | -292 | -52 | -32 |
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| Interest and dividends received | 0 | 0 | 0 | 0 | 0 | 0 | 10 |
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| Subsidies received | - | - | - | 14 | 3 | 1 | - |
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| Interest paid | -3 | -2 | -2 | -6 | -8 | -12 | -7 |
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| Income taxes paid | -115 | -130 | -33 | -3 | -0 | -3 | -3 |
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| Net cash provided by (used in) operating activities | 219 | 161 | 127 | 154 | -435 | -66 | -33 |
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| Purchase of property, plant and equipment | -57 | -134 | -97 | -16 | -44 | -3 | -3 |
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| Proceeds from sale of property, plant and equipment | 0 | 2 | 0 | 0 | 30 | 3 | 2 |
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| Purchase of intangible assets | -9 | -9 | -20 | -24 | -8 | -32 | -11 |
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| Short-term loan advances | -15 | -0 | -1 | -7 | -1 | -0 | -4 |
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| Proceeds from collection of short-term loans receivable | 15 | 0 | 1 | 7 | 1 | 1 | 2 |
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| Proceeds from collection of long-term loans receivable | - | 1 | 2 | 2 | 2 | 1 | - |
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| Purchase of investment securities | - | - | - | - | - | -100 | -100 |
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| Proceeds from sale of investment securities | - | - | - | - | 43 | 2 | - |
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| Payments of guarantee deposits | -9 | -31 | -2 | -4 | -31 | -31 | -22 |
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| Proceeds from refund of guarantee deposits | 4 | 12 | 1 | 5 | 8 | 13 | 1 |
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| Purchase of shares of subsidiaries resulting in change in scope of consolidation | - | - | - | -536 | - | -100 | - |
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| Proceeds from sale of shares of subsidiaries resulting in change in scope of consolidation | - | - | - | - | - | 59 | 118 |
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| Other, net | -0 | -3 | -0 | -1 | -40 | -60 | 0 |
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| Net cash provided by (used in) investing activities | -71 | -164 | -119 | -686 | -43 | -248 | -17 |
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| Net increase (decrease) in short-term borrowings | - | - | - | 87 | -47 | 60 | -100 |
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| Repayments of long-term borrowings | -95 | -72 | -54 | -107 | -183 | -187 | -187 |
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| Proceeds from issuance of shares | - | - | - | - | 71 | 200 | 335 |
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| Purchase of treasury shares | -0 | -0 | - | -23 | - | - | -0 |
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| Repayments of lease liabilities | -52 | -70 | -49 | -69 | -89 | -81 | -69 |
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| Net cash provided by (used in) financing activities | -143 | -183 | -143 | 588 | 132 | -8 | -21 |
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| Net increase (decrease) in cash and cash equivalents | 5 | -186 | -135 | 57 | -345 | -322 | -70 |
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