Blue Birthday (2021) featured a cast of 8 tracked actors. Of these, 8 (100%) are still alive today. The oldest surviving cast member is Min Chae-yeon, age 34. This TV series starred YERI and Yang Hong-seok.
100% still with us· verified cast
Survivorship
Cast Reunion Index: 100% still living
Cast8 members
| Person | Character | Status | DOB | Age | DOD | Age in 2021 |
|---|---|---|---|---|---|---|
 YERI Oh Ha-rin | Oh Ha-rin | Living | 05/03/1999 | 27 | — | 22 |
 Yang Hong-seok Ji Seo-jun | Ji Seo-jun | Living | 17/04/1994 | 32 | — | 27 |
 Lee Sang-jun Cha Eun-seong | Cha Eun-seong | Living | 03/03/1998 | 28 | — | 23 |
 Kim Gyeol-yu Do Su-jin | Do Su-jin | Living | 11/04/2000 | 26 | — | 21 |
 Ju Hyeon Kim Ui-yeong | Kim Ui-yeong | Living | 23/05/1995 | 31 | — | 26 |
 Kim Yi-seo Ji Hye-min | Ji Hye-min | Living | 21/02/1996 | 30 | — | 25 |
 Lee Dong-ju Kim Sin-u | Kim Sin-u | Living | 02/04/1994 | 32 | — | 27 |
 Min Chae-yeon Ha Rin's Co-worker | Ha Rin's Co-worker | Living | 11/08/1992 | 34 | — | 29 |