Loss per share (Details) - KRW (₩) ₩ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Notes and other explanatory information [abstract] | |||
| Loss for the period, attributable to the owners of Parent Company | ₩ (205,742,925) | ₩ (2,541,375) | ₩ 3,137,186 |
| Dividends on non-redeemable preference shares | |||
| Loss attributable to ordinary shareholders | ₩ (205,742,925) | ₩ (2,541,375) | ₩ 3,137,186 |