| Jun 30,
2021 | Jun 30,
2022 | Jun 30,
2023 |
|---|
| Cash and deposits | - | 547 | 516 |
|---|
| Notes receivable - trade | - | - | 0 |
|---|
| Accounts receivable-trade, and contract assets | - | 193 | 199 |
|---|
| Electronically recorded monetary claims - operating | - | - | 0 |
|---|
| Merchandise | - | 6 | 6 |
|---|
| Supplies | - | 2 | 1 |
|---|
| Supplies | - | 2 | 1 |
|---|
| Other | - | 1 | 3 |
|---|
| Advance payments to suppliers | - | 0 | 1 |
|---|
| Allowance for doubtful accounts | - | -0 | -0 |
|---|
| Prepaid expenses | - | 9 | 8 |
|---|
| Current assets | - | 758 | 736 |
|---|
| Other | - | 1 | 3 |
|---|
| Allowance for doubtful accounts | - | -0 | -0 |
|---|
| Current assets | - | 758 | 736 |
|---|
| Buildings, net | - | 100 | 96 |
|---|
| Structures, net | - | 0 | 0 |
|---|
| Vehicles, net | - | - | - |
|---|
| Property, plant and equipment | - | 170 | 166 |
|---|
| Tools, furniture and fixtures, net | - | 8 | 7 |
|---|
| Land | - | 62 | 62 |
|---|
| Property, plant and equipment | - | 170 | 166 |
|---|
| Trademark right | - | 0 | 0 |
|---|
| Software | - | 24 | 14 |
|---|
| Software in progress | - | 63 | 31 |
|---|
| Other | - | 1 | 1 |
|---|
| Intangible assets | - | 88 | 46 |
|---|
| Intangible assets | - | 88 | 46 |
|---|
| Investment securities | - | 15 | 14 |
|---|
| Other | - | 54 | 60 |
|---|
| Investments in capital | - | 0 | 0 |
|---|
| Allowance for doubtful accounts | - | -0 | -0 |
|---|
| Investments and other assets | - | 187 | 187 |
|---|
| Long-term prepaid expenses | - | 1 | 0 |
|---|
| Deferred tax assets | - | 118 | 112 |
|---|
| Other | - | 54 | 60 |
|---|
| Allowance for doubtful accounts | - | -0 | -0 |
|---|
| Investments and other assets | - | 187 | 187 |
|---|
| Non-current assets | - | 446 | 399 |
|---|
| Assets | - | 1,203 | 1,135 |
|---|
| Accounts payable - trade | - | 42 | 59 |
|---|
| Short-term borrowings | - | 140 | 140 |
|---|
| Current portion of long-term borrowings | - | 84 | 56 |
|---|
| Income taxes payable | - | 27 | 9 |
|---|
| Accounts payable - other | - | 39 | 23 |
|---|
| Accrued consumption taxes | - | 18 | 12 |
|---|
| Accrued expenses | - | 40 | 41 |
|---|
| Contract liabilities | - | 231 | 205 |
|---|
| Income taxes payable | - | 27 | 9 |
|---|
| Provision for bonuses | - | 20 | 20 |
|---|
| Accrued consumption taxes | - | 18 | 12 |
|---|
| Other | - | 1 | 1 |
|---|
| Deposits received | - | 4 | 4 |
|---|
| Current liabilities | - | 645 | 569 |
|---|
| Contract liabilities | - | 231 | 205 |
|---|
| Provision for bonuses | - | 20 | 20 |
|---|
| Other | - | 1 | 1 |
|---|
| Current liabilities | - | 645 | 569 |
|---|
| Long-term borrowings | - | 141 | 85 |
|---|
| Provision for retirement benefits | - | 14 | 16 |
|---|
| Non-current liabilities | - | 155 | 102 |
|---|
| Liabilities | - | 800 | 671 |
|---|
| Share capital | - | 40 | 40 |
|---|
| Capital surplus | - | 10 | 10 |
|---|
| Legal capital surplus | - | 10 | 10 |
|---|
| Capital surplus | - | 10 | 10 |
|---|
| Retained earnings | - | 349 | 408 |
|---|
| Legal retained earnings | - | 4 | 4 |
|---|
| Retained earnings brought forward | - | 345 | 404 |
|---|
| Retained earnings | - | 349 | 408 |
|---|
| Shareholders' equity | - | 399 | 458 |
|---|
| Valuation difference on available-for-sale securities | - | 4 | 6 |
|---|
| Valuation and translation adjustments | - | 4 | 6 |
|---|
| Net assets | 505 | 403 | 465 |
|---|
| Liabilities and net assets | - | 1,203 | 1,135 |
|---|