| Mar 31,
2019 | Mar 31,
2020 | Mar 31,
2021 | Mar 31,
2022 | Mar 31,
2023 | Mar 31,
2024 |
|---|
| Profit (loss) before income taxes | 385 | 103 | 240 | -291 | -533 | -2,447 |
|---|
| Depreciation | 79 | 110 | 113 | 80 | 91 | 106 |
|---|
| Impairment losses | - | - | - | 102 | 222 | 961 |
|---|
| Amortization of goodwill | - | 1 | 2 | 2 | 2 | 14 |
|---|
| Loss (gain) on sale of non-current assets | - | - | - | - | - | 3 |
|---|
| Loss (gain) on sale of investment securities | - | - | - | -2 | -5 | -120 |
|---|
| Increase (decrease) in provision for bonuses | 15 | -9 | 10 | 8 | 19 | -90 |
|---|
| Increase (decrease) in allowance for doubtful accounts | 0 | 9 | 9 | 19 | -23 | -6 |
|---|
| Increase (decrease) in provision for transfer loss | - | - | - | - | 20 | -20 |
|---|
| Increase decreasele provision for loss on office closing | - | - | - | - | - | 362 |
|---|
| Interest and dividend income | -0 | -0 | -0 | -2 | -3 | -0 |
|---|
| Insurance claim income | - | - | - | - | - | -6 |
|---|
| Share-based payment expenses | - | - | - | - | 7 | 9 |
|---|
| Interest expenses | 2 | 3 | 3 | 4 | 5 | 11 |
|---|
| Decrease (increase) in trade receivables | -296 | -7 | -233 | -170 | 128 | -320 |
|---|
| Decrease (increase) in distressed receivables | - | - | - | -13 | 7 | -10 |
|---|
| Decrease (increase) in inventories | -4 | 1 | -7 | -7 | -0 | 40 |
|---|
| Decrease (increase) in prepaid expenses | -48 | -60 | -25 | -28 | -1 | 383 |
|---|
| Increase (decrease) in trade payables | 280 | -97 | 221 | 136 | -88 | 231 |
|---|
| Increase (decrease) in accounts payable - other | 99 | 311 | 249 | 364 | -7 | -225 |
|---|
| Increase (decrease) in accrued consumption taxes | 2 | 9 | 74 | -89 | -3 | -48 |
|---|
| Other, net | 35 | 12 | 65 | -5 | -0 | -48 |
|---|
| Subtotal | 605 | 378 | 809 | 107 | 1 | -1,220 |
|---|
| Interest and dividends received | 0 | 0 | 0 | 0 | 3 | 0 |
|---|
| Interest paid | -2 | -3 | -3 | -4 | -5 | -11 |
|---|
| Proceeds from insurance income | - | - | - | 2 | 3 | 6 |
|---|
| Income taxes paid | -129 | -133 | -13 | -133 | -6 | -22 |
|---|
| Income taxes refund | - | - | 39 | 1 | 37 | 11 |
|---|
| Net cash provided by (used in) operating activities | 474 | 242 | 831 | -28 | 34 | -1,235 |
|---|
| Purchase of property, plant and equipment | -204 | -210 | -43 | -96 | -61 | -68 |
|---|
| Proceeds from sale of property, plant and equipment | - | - | 0 | - | 0 | 2 |
|---|
| Payments for asset retirement obligations | - | - | - | - | - | -166 |
|---|
| Purchase of intangible assets | -3 | -3 | -1 | -7 | -67 | -47 |
|---|
| Purchase of investment securities | - | -2 | - | - | - | -139 |
|---|
| Proceeds from sale of investment securities | - | - | - | 2 | 5 | 86 |
|---|
| Payments for investments in capital | - | - | - | -37 | -10 | -4 |
|---|
| Purchase of shares of subsidiaries resulting in change in scope of consolidation | - | - | - | - | - | -311 |
|---|
| Proceeds from collection of loans receivable | - | - | - | - | - | 0 |
|---|
| Payments of leasehold and guarantee deposits | - | - | - | - | - | -17 |
|---|
| Proceeds from refund of leasehold and guarantee deposits | - | - | - | - | - | 54 |
|---|
| Net cash provided by (used in) investing activities | -551 | -266 | -265 | -353 | -366 | -611 |
|---|
| Proceeds from short-term borrowings | - | - | - | - | - | 404 |
|---|
| Repayments of short-term borrowings | - | - | - | - | - | -120 |
|---|
| Repayments of long-term borrowings | -102 | -126 | -104 | -235 | -261 | -323 |
|---|
| Redemption of bonds | - | - | - | - | - | -3 |
|---|
| Proceeds from issuance of shares resulting from exercise of share acquisition rights | - | - | - | - | - | 3 |
|---|
| Repayments of lease liabilities | - | -0 | -2 | -2 | -2 | -12 |
|---|
| Proceeds from issuance of subscription rights to share | - | - | - | - | - | 158 |
|---|
| Dividends paid | -14 | -18 | -5 | -9 | -0 | -0 |
|---|
| Net cash provided by (used in) financing activities | 248 | 35 | 807 | 201 | 363 | 105 |
|---|
| Effect of exchange rate change on cash and cash equivalents | 0 | -0 | 0 | 0 | 0 | - |
|---|
| Net increase (decrease) in cash and cash equivalents | 172 | 12 | 1,372 | -179 | 31 | -1,741 |
|---|