Somehow 18 (2017) featured a cast of 14 tracked actors. Of these, 14 (100%) are still alive today. The oldest surviving cast member is Jo Young-jin, age 63. This TV series starred Minho and Lee Yu-bi.
100% still with us· verified cast
Survivorship
Cast Reunion Index: 100% still living
Cast14 members
| Person | Character | Status | DOB | Age | DOD | Age in 2017 |
|---|---|---|---|---|---|---|
 Minho Oh Kyung Hwi | Oh Kyung Hwi | Living | 09/12/1991 | 34 | — | 26 |
 Lee Yu-bi Han Na Bi | Han Na Bi | Living | 22/11/1990 | 35 | — | 27 |
 Kim Bo-mi Oh Yi do | Oh Yi do | Living | 15/05/1987 | 39 | — | 30 |
 Kim Hee-chan Jang Seul Gi | Jang Seul Gi | Living | 23/12/1992 | 33 | — | 25 |
 Choi Seo Hyuk Baek Jin Wook | Baek Jin Wook | Living | 01/05/1992 | 34 | — | 25 |
 Yoo Joon-hong Ma Ki Ho | Ma Ki Ho | Living | 19/06/1991 | 35 | — | 26 |
 Choo Soo Bin Woo Hee | Woo Hee | Living | 27/07/2000 | 26 | — | 17 |
 Min-seo Da Eun | Da Eun | Living | 09/04/1996 | 30 | — | 21 |
 Lee Sang-hoon [Teacher] | [Teacher] | Living | 07/01/1976 | 50 | — | 41 |
| Living | 28/09/1992 | 33 | — | 25 | ||
| Living | 24/04/1991 | 35 | — | 26 | ||
| Living | 15/12/1962 | 63 | — | 55 | ||
| Living | 09/03/1971 | 55 | — | 46 | ||
| Living | 27/10/1988 | 37 | — | 29 |
