| idol_id | 1920 |
| Selca owner | atheart_seohyeon |
| Pop type | K-pop |
| Stage name (romanized) | Seohyeon |
| Stage name (original) | 서현 |
| Real name (romanized) | Moon Seohyeon |
| Real name (original) | 문서현 |
| Birth date | 2008-09-12 (age 16) ▲ ▼ |
| Chinese zodiac sign | 🐀 Rat |
| Western zodiac sign | ♍ Virgo |
| Hometown | Taean |
| Height | |
| Weight | |
| Blood type | |
| Debut date | 2025-07-15 ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | |
|---|---|---|---|---|---|---|
|
AtHeart (앳하트) | Titan Content | 2025-07-15 | Yes |