| Mar 31,
2013 | Mar 31,
2014 | Mar 31,
2015 | Mar 31,
2016 | Mar 31,
2017 | Mar 31,
2018 | Mar 31,
2019 | Mar 31,
2020 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 |
|---|
| Profit (loss) before income taxes | 463 | 1,064 | 2,973 | 5,591 | 7,969 | 2,974 | 3,831 | 4,628 | 2,157 | 4,927 | 4,612 | 7,168 |
|---|
| Depreciation | 19 | 18 | 16 | 16 | 122 | 160 | 166 | 116 | 72 | 92 | 120 | 206 |
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| Impairment losses | - | - | - | - | - | 70 | 29 | - | - | - | 1,203 | 40 |
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| Amortization of goodwill | - | - | - | - | - | - | - | - | - | 56 | 28 | - |
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| Gain on sale of non-current assets | - | - | - | - | - | - | - | - | - | - | - | -1,207 |
|---|
| Loss (gain) on sale of investment securities | - | - | - | - | - | - | 160 | -117 | - | - | - | -17 |
|---|
| Loss (gain) on sale of shares of subsidiaries and associates | - | - | - | - | - | - | -39 | - | - | - | 64 | - |
|---|
| Share of loss (profit) of entities accounted for using equity method | - | - | - | -154 | -545 | 292 | 5 | 93 | -3 | 378 | 6,669 | -59 |
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| Office relocation expenses | - | - | - | - | - | - | - | - | - | - | 37 | - |
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| Interest income | -0 | -1 | -0 | -0 | -8 | -7 | -11 | -6 | -1 | - | -9 | -7 |
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| Dividend income | - | -0 | -0 | -0 | -12 | -14 | -10 | -1 | - | - | -9 | -8 |
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| Interest expenses | 55 | 155 | 262 | 293 | 610 | 542 | 613 | 729 | 392 | 457 | 598 | 445 |
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| Foreign exchange losses (gains) | - | - | - | - | -10 | 127 | -88 | -80 | 307 | 43 | 174 | - |
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| non-deductible consumption taxes | 20 | 55 | 65 | 104 | 155 | 178 | 271 | 226 | 168 | 335 | 301 | 8 |
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| Decrease (increase) in trade receivables | 0 | -7 | 8 | -4 | 22 | -116 | 82 | -47 | -51 | -7 | -67 | -57 |
|---|
| Decrease (increase) in inventories | -2,663 | -13,088 | 4,041 | -9,969 | -6,101 | -9,547 | -28,831 | 25,948 | 2,579 | 5,364 | 13,443 | -32,176 |
|---|
| Increase (decrease) in trade payables | 96 | -88 | 8 | 17 | 24 | 18 | -21 | 122 | -23 | -80 | 11 | 23 |
|---|
| Decrease (increase) in advance payments to suppliers | -264 | 174 | -33 | -170 | 143 | -319 | -747 | 170 | 753 | 139 | -164 | 69 |
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| Decrease (increase) in prepaid expenses | -30 | -134 | 122 | -72 | 42 | 50 | -113 | 26 | 56 | -165 | 138 | -69 |
|---|
| Increase (decrease) in accrued expenses | 2 | -3 | 5 | -2 | 6 | 4 | 7 | 6 | -22 | -23 | -32 | -11 |
|---|
| Increase (decrease) in accounts payable - other | 19 | -9 | 160 | -104 | 146 | 24 | -372 | -33 | -26 | 91 | 213 | -301 |
|---|
| Increase (decrease) in accrued consumption taxes | -1 | -1 | 9 | -15 | 17 | -25 | 36 | -15 | -20 | 50 | 5 | -42 |
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| Increase (decrease) in deposits received | 1 | -1 | 18 | -3 | -8 | 511 | -426 | 36 | -82 | - | 11 | 86 |
|---|
| Increase (decrease) in advances received | - | -8 | - | - | - | 1,145 | -1,114 | 14 | -25 | 420 | -440 | 169 |
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| Increase (decrease) in unearned revenue | 1 | 12 | 15 | 34 | -6 | -17 | 40 | -38 | 14 | -26 | 59 | 28 |
|---|
| Increase (decrease) in leasehold and guarantee deposits received | 387 | 418 | -328 | 363 | -33 | -62 | 480 | 18 | 230 | -19 | -382 | 643 |
|---|
| Other, net | -14 | -51 | -71 | -153 | 59 | -50 | -155 | -451 | -94 | 112 | -595 | -84 |
|---|
| Subtotal | -1,909 | -11,494 | 7,267 | -4,200 | -312 | -4,094 | -26,043 | 31,407 | 5,991 | 12,212 | 25,992 | -25,155 |
|---|
| Interest and dividends received | 0 | 1 | 1 | 10 | 29 | 29 | 27 | 15 | 38 | 12 | 59 | 16 |
|---|
| Interest paid | -56 | -159 | -265 | -298 | -595 | -534 | -594 | -791 | -369 | -473 | -631 | -447 |
|---|
| Income taxes refund (paid) | - | - | - | - | - | - | - | - | - | - | -5,426 | 373 |
|---|
| Net cash provided by (used in) operating activities | -2,145 | -11,898 | 6,608 | -5,616 | -2,908 | -5,640 | -28,021 | 29,681 | 3,570 | 11,373 | 19,993 | -25,212 |
|---|
| Decrease (increase) in time deposits | -14 | -93 | -12 | -6 | -86 | 207 | - | - | - | -85 | 85 | -344 |
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| Purchase of property, plant and equipment | - | - | -1 | -92 | -101 | -38 | -324 | -144 | -55 | -13,373 | -379 | -663 |
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| Proceeds from sale of property, plant and equipment | - | 23 | - | - | - | - | - | - | - | - | - | 4,150 |
|---|
| Purchase of intangible assets | - | - | - | - | - | - | - | - | - | - | - | -1 |
|---|
| Payments of leasehold and guarantee deposits | -0 | -10 | -1 | -77 | -23 | -5 | -248 | -52 | -18 | -129 | -138 | -131 |
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| Proceeds from refund of leasehold and guarantee deposits | - | - | - | - | - | - | - | - | - | - | - | 83 |
|---|
| Payments for investments in capital | - | - | - | - | -504 | - | - | - | - | -171 | -297 | -47 |
|---|
| Proceeds from redemption of investment securities | - | - | 10 | - | - | - | - | - | - | - | 263 | - |
|---|
| Proceeds from sale of investment securities | - | - | - | - | - | - | 416 | 1,320 | - | - | - | 22 |
|---|
| Proceeds from sale of shares of subsidiaries and associates | - | - | - | - | - | - | - | - | - | - | 371 | - |
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| Other, net | 1 | -7 | -14 | -10 | -45 | -10 | -23 | 37 | -24 | -16 | -61 | 624 |
|---|
| Net cash provided by (used in) investing activities | -14 | -88 | -329 | -2,316 | 1,137 | 154 | -7 | 1,161 | -98 | -17,513 | -156 | 3,691 |
|---|
| Net increase (decrease) in short-term borrowings | 96 | 800 | -809 | 235 | 114 | 2,789 | 1,639 | -3,869 | -302 | 329 | -930 | 1,440 |
|---|
| Proceeds from long-term borrowings | 4,360 | 17,410 | 9,083 | 22,991 | 22,158 | 26,233 | 61,618 | 36,488 | 21,466 | 37,599 | 31,163 | 45,874 |
|---|
| Repayments of long-term borrowings | -1,443 | -5,575 | -11,565 | -13,284 | -18,435 | -21,454 | -29,953 | -59,720 | -24,581 | -35,078 | -43,291 | -21,714 |
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| Repayments of lease liabilities | -13 | -13 | -13 | -11 | -12 | -14 | -15 | -18 | -20 | -27 | -32 | -30 |
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| Purchase of treasury shares | - | - | - | - | - | - | - | - | - | - | - | -3,499 |
|---|
| Dividends paid | -44 | -78 | -166 | -507 | -786 | -982 | -982 | -992 | -1,003 | -458 | -913 | -1,005 |
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| Other, net | - | 0 | 19 | - | 13 | - | - | - | - | - | 29 | 48 |
|---|
| Net cash provided by (used in) financing activities | 2,955 | 12,655 | 1,088 | 9,585 | 3,395 | 6,413 | 32,512 | -27,820 | -4,441 | 2,363 | -13,975 | 21,112 |
|---|
| Effect of exchange rate change on cash and cash equivalents | - | - | - | - | -17 | 7 | -136 | -28 | 18 | 57 | 99 | 16 |
|---|
| Net increase (decrease) in cash and cash equivalents | 796 | 669 | 7,368 | 1,653 | 1,607 | 934 | 4,348 | 2,994 | -953 | -3,718 | 5,960 | -392 |
|---|
| Increase in cash and cash equivalents resulting from inclusion of subsidiaries in consolidation | - | - | - | - | - | - | - | - | - | - | - | - |
|---|