| idol_id | 1468 |
| Selca owner | classy_seonyou |
| Pop type | K-pop |
| Stage name (romanized) | Seonyou |
| Stage name (original) | 선유 |
| Real name (romanized) | Kim Seon-yu |
| Real name (original) | 김선유 (金璇猷) |
| Birth date | 2008-03-20 (age 17) ▲ ▼ |
| Chinese zodiac sign | 🐀 Rat |
| Western zodiac sign | ♓ Pisces |
| Hometown | Gangneung |
| Height | 161.0cm (5'3") ▲ ▼ |
| Weight | 43.0kg (95lb) ▲ ▼ |
| Blood type | B |
| MBTI | ISTP |
| Debut date | 2022-05-05 (3 years and 5 months ago) ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | |
|---|---|---|---|---|---|---|
|
CLASS:y (클라씨) | M25 | 2022-05-05 | Yes |