18 Youth (2026) featured a cast of 9 tracked actors. Of these, 7 (100%) are still alive today. The oldest surviving cast member is Jeon So-min, age 40. This film starred Jeon So-min and Kim Do-yeon.
100% still with us· verified cast78% of full cast · incl. 2 unverified
Survivorship
Cast Reunion Index: 100% still living
Cast9 members
| Person | Character | Status | DOB | Age | DOD | Age in 2026 |
|---|---|---|---|---|---|---|
 Jeon So-min Jeong Hee-joo | Jeong Hee-joo | Living | 07/04/1986 | 40 | — | 40 |
 Kim Do-yeon Lee Soon-jeong | Lee Soon-jeong | Living | 04/12/1999 | 26 | — | 27 |
 Exy Kim Kyung-hee | Kim Kyung-hee | Living | 06/11/1995 | 30 | — | 31 |
 Park Seo-yeon Kang Yi-ji | Kang Yi-ji | Living | 05/03/2002 | 24 | — | 24 |
 Cho Ha-young Na Ye-ri | Na Ye-ri | Living | 15/09/1997 | 29 | — | 29 |
| Living | 11/10/2001 | 24 | — | 25 | ||
Park So-eun Gong Eun-ji | Gong Eun-ji | Unverified | — | — | — | — |
Kim Bo-gyeong Instagram Girl | Instagram Girl | Unverified | — | — | — | — |
 Song Ji-yeon Dong-hee | Dong-hee | Living | 05/07/1991 | 35 | — | 35 |
