| Mar 31,
2021 | Mar 31,
2022 | Jun 30,
2023 | Jun 30,
2024 |
|---|
| Cash and deposits | - | 2,341 | 2,199 | 4,759 |
|---|
| Accounts receivable-trade, and contract assets | - | 5,880 | 5,278 | - |
|---|
| Supplies | - | 32 | 32 | - |
|---|
| Accounts receivable - other | - | 153 | 19 | - |
|---|
| Consumption taxes refund receivable | - | 33 | 93 | 16 |
|---|
| Consumption taxes refund receivable | - | 33 | 93 | 16 |
|---|
| Other | - | 469 | 274 | 385 |
|---|
| Other | - | 469 | 274 | 385 |
|---|
| Allowance for doubtful accounts | - | -22 | -18 | -63 |
|---|
| Allowance for doubtful accounts | - | -22 | -18 | -63 |
|---|
| Current assets | - | 8,886 | 7,877 | 11,319 |
|---|
| Current assets | - | 8,886 | 7,877 | 11,319 |
|---|
| Buildings, net | - | 196 | 164 | 302 |
|---|
| Machinery, equipment and vehicles, net | - | 2,232 | 2,832 | - |
|---|
| Machinery and equipment, net | - | - | - | 3,417 |
|---|
| Land | - | 103 | 142 | 251 |
|---|
| Leased assets, net | - | 2,409 | 1,581 | 546 |
|---|
| Land | - | 103 | 142 | 251 |
|---|
| Construction in progress | - | 10 | 42 | 44 |
|---|
| Leased assets, net | - | 2,409 | 1,581 | 546 |
|---|
| Other, net | - | 192 | 167 | 285 |
|---|
| Construction in progress | - | 10 | 42 | 44 |
|---|
| Property, plant and equipment | - | 5,142 | 4,928 | 4,846 |
|---|
| Other, net | - | 192 | 167 | 285 |
|---|
| Property, plant and equipment | - | 5,142 | 4,928 | 4,846 |
|---|
| Software | - | 403 | 289 | 183 |
|---|
| Other | - | 41 | 53 | 52 |
|---|
| Intangible assets | - | 444 | 342 | 235 |
|---|
| Investment securities | - | 129 | 139 | 236 |
|---|
| Deferred tax assets | - | 132 | 104 | 214 |
|---|
| Deposit | - | 557 | 1,483 | 637 |
|---|
| Other | - | 71 | 76 | 32 |
|---|
| Deferred tax assets | - | 132 | 104 | 214 |
|---|
| Investments and other assets | - | 889 | 1,801 | 1,119 |
|---|
| Deposit | - | 557 | 1,483 | 637 |
|---|
| Other | - | 71 | 76 | 32 |
|---|
| Investments and other assets | - | 889 | 1,801 | 1,119 |
|---|
| Non-current assets | - | 6,475 | 7,071 | 6,200 |
|---|
| Assets | - | 15,361 | 14,949 | 17,519 |
|---|
| Accounts payable - trade | - | 2,452 | 2,436 | 2,562 |
|---|
| Short-term borrowings | - | 500 | - | - |
|---|
| Current portion of long-term borrowings | - | 900 | 1,352 | 1,553 |
|---|
| Current portion of long-term borrowings | - | 900 | 1,352 | 1,553 |
|---|
| Accounts payable - other | - | 333 | 338 | 658 |
|---|
| Lease liabilities | - | 759 | 428 | 197 |
|---|
| Accounts payable - other | - | 333 | 338 | 658 |
|---|
| Deposits received | - | 388 | 193 | 459 |
|---|
| Accounts payable - other | - | 333 | 338 | 658 |
|---|
| Deposits received | - | 388 | 193 | 459 |
|---|
| Lease liabilities | - | 759 | 428 | 197 |
|---|
| Lease liabilities | - | 759 | 428 | 197 |
|---|
| Income taxes payable | - | 369 | 43 | 779 |
|---|
| Deposits received | - | 388 | 193 | 459 |
|---|
| Income taxes payable | - | 369 | 43 | 779 |
|---|
| Provision for bonuses | - | 125 | 57 | 72 |
|---|
| Income taxes payable | - | 369 | 43 | 779 |
|---|
| Provision for bonuses | - | 125 | 57 | 72 |
|---|
| Other | - | 180 | 149 | 382 |
|---|
| Provision for loss on relocation | - | - | 30 | - |
|---|
| Current liabilities | - | 6,006 | 5,026 | 6,663 |
|---|
| Provision for bonuses | - | 125 | 57 | 72 |
|---|
| Other | - | 180 | 149 | 382 |
|---|
| Provision for loss on relocation | - | - | 30 | - |
|---|
| Current liabilities | - | 6,006 | 5,026 | 6,663 |
|---|
| Other | - | 180 | 149 | 382 |
|---|
| Current liabilities | - | 6,006 | 5,026 | 6,663 |
|---|
| Long-term borrowings | - | 2,710 | 2,984 | 2,242 |
|---|
| Lease liabilities | - | 1,157 | 606 | 240 |
|---|
| Other | - | 200 | 110 | 43 |
|---|
| Non-current liabilities | - | 4,066 | 3,700 | 2,525 |
|---|
| Liabilities | - | 10,071 | 8,726 | 9,188 |
|---|
| Share capital | - | 100 | 100 | 359 |
|---|
| Capital surplus | - | 984 | 984 | 1,242 |
|---|
| Capital surplus | - | 984 | 984 | 1,242 |
|---|
| Retained earnings | - | 4,188 | 5,114 | 6,701 |
|---|
| Retained earnings | - | 4,188 | 5,114 | 6,701 |
|---|
| Shareholders' equity | - | 5,272 | 6,198 | 8,302 |
|---|
| Share acquisition rights | - | 10 | 17 | 30 |
|---|
| Net assets | 4,605 | 5,289 | 6,223 | 8,332 |
|---|
| Non-controlling interests | - | 8 | 7 | - |
|---|
| Net assets | 4,605 | 5,289 | 6,223 | 8,332 |
|---|
| Liabilities and net assets | - | 15,361 | 14,949 | 17,519 |
|---|