Commitments and contingencies (Details 1) - Financial Institutions [Member] - CubeBio Co., Ltd. [Member] - KRW (₩) ₩ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IfrsStatementLineItems [Line Items] | ||||||||||||||
| Credit limit | ₩ 70,000 | ₩ 70,000 | ₩ 70,000 | |||||||||||
| Borrowings amount | 6,241 | 21,069 | 22,614 | |||||||||||
| KYOBO Securities Co., Ltd [Member] | ||||||||||||||
| IfrsStatementLineItems [Line Items] | ||||||||||||||
| Credit limit | 40,000 | 40,000 | 40,000 | |||||||||||
| Borrowings amount | ||||||||||||||
| Shinhan Card Co., Ltd. [Member] | ||||||||||||||
| IfrsStatementLineItems [Line Items] | ||||||||||||||
| Credit limit | 30,000 | [1],[2] | 30,000 | [3],[4] | 30,000 | [3] | ||||||||
| Borrowings amount | ₩ 6,241 | [1],[2] | ₩ 21,069 | [3],[4] | ₩ 22,614 | [3] | ||||||||
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