| idol_id | 1004 |
| Selca owner | goodday_heejin |
| Pop type | K-pop |
| Stage name (romanized) | Heejin |
| Stage name (original) | 희진 |
| Real name (romanized) | Song Heejin |
| Real name (original) | 송희진 |
| Birth date | 1995-08-19 (age 29) ▲ ▼ |
| Chinese zodiac sign | 🐖 Pig |
| Western zodiac sign | ♌ Leo |
| Hometown | Seoul |
| Height | 162.0cm (5'4") ▲ ▼ |
| Weight | 48.0kg (106lb) ▲ ▼ |
| Blood type | B |
| Debut date | 2015-10-02 (9 years and 10 months ago) ▲ ▼ |
| Country of origin | 
Korea, Republic of |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | Roles | |
|---|---|---|---|---|---|---|---|
|
Good Day (굿데이) | C9 Entertainment | 2017-08-30 | 2019-11-11 | Group disbanded | Leader, Main vocal |