General Information | ||
| International Stage Name | Hayun | |
| Domestic Stage Name | 하윤 | |
| Full Name | Choi Seojin | |
| Full Domestic Name | 최서진 | |
| Date of Birth | 2004-01-16 (age 22) | |
| Zodiac | Capricorn | |
| Country of Birth | South Korea | |
| Related Artists | Hi-L - Vocal,Dancer | |
| Original group | Hi-L | |
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