Financial income and expenses (Details) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Apr. 01, 2023 |
|
| Financial Income [Abstract] | |||
| Change in fair value of warrant liability | ¥ 1,435 | ¥ 0 | ¥ 0 |
| Gain on sale of crypto assets held (non-current assets) | 11 | 0 | 0 |
| Derivative gains | 9 | 61 | 0 |
| Others | 2 | 6 | 0 |
| Total | 1,457 | 67 | 0 |
| Financial Expenses [Abstract] | |||
| Impairment loss of other financial assets (non-current assets) | 4 | 11 | 0 |
| Interest expenses | 35 | 6 | 3 |
| Derivative losses | 0 | 0 | 4 |
| Total | ¥ 39 | ¥ 17 | ¥ 7 |
| X | ||||||||||
- Definition Financial Expenses No definition available.
|
| X | ||||||||||
- Definition Financial Income No definition available.
|
| X | ||||||||||
- Definition Gain On Derivative Financial Instruments No definition available.
|
| X | ||||||||||
- Definition Increase (Decrease) In Far Value Of Warrant Liabilities No definition available.
|
| X | ||||||||||
- Definition Loss On Derivative Financial Instruments No definition available.
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The gain on disposals of non-current assets. [Refer: Non-current assets] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|