One Ordinary Day (2021) featured a cast of 18 tracked actors. Of these, 18 (100%) are still alive today. The oldest surviving cast member is Kim Hong-pa, age 64. This TV series starred Kim Soo-hyun and Cha Seung-won.
100% still with us· verified cast
Survivorship
Cast Reunion Index: 100% still living
Cast18 members
| Person | Character | Status | DOB | Age | DOD | Age in 2021 |
|---|---|---|---|---|---|---|
 Kim Soo-hyun Kim Hyun-soo | Kim Hyun-soo | Living | 16/02/1988 | 38 | — | 33 |
 Cha Seung-won Shin Joong-han | Shin Joong-han | Living | 07/06/1970 | 56 | — | 51 |
 Kim Sung-kyu Do Ji-tae | Do Ji-tae | Living | 06/01/1986 | 40 | — | 35 |
 Kim Shin-rock Ahn Tae-hee | Ahn Tae-hee | Living | 24/03/1981 | 45 | — | 40 |
 Lee Seol Seo Soo-jin | Seo Soo-jin | Living | 13/04/1993 | 33 | — | 28 |
 Kim Hong-pa Park Sang-beom | Park Sang-beom | Living | 05/01/1962 | 64 | — | 59 |
 Yang Kyung-won Park Doo-shik | Park Doo-shik | Living | 01/04/1981 | 45 | — | 40 |
 Seo Jae-hee Park Mi-kyung | Park Mi-kyung | Living | 15/05/1976 | 50 | — | 45 |
 Moon Ye-won Kang Da-kyung | Kang Da-kyung | Living | 10/09/1991 | 35 | — | 30 |
 Jeong Ji-ho NFS Staff | NFS Staff | Living | 07/09/1980 | 46 | — | 41 |
 Yoo Seung-mok Jung Sang-Soo | Jung Sang-Soo | Living | 14/09/1969 | 57 | — | 52 |
 Sung Nak-kyung Song Baek-Ho | Song Baek-Ho | Living | 26/12/1975 | 50 | — | 46 |
 Park Yoon-hee Kim Hyun-Soo's father | Kim Hyun-Soo's father | Living | 27/12/1967 | 58 | — | 54 |
 Han Dong-won [Detective] | [Detective] | Living | 29/04/1985 | 41 | — | 36 |
 Kim Young-ah Hong Jung Ah [NFS staff] | Hong Jung Ah [NFS staff] | Living | 24/05/1975 | 51 | — | 46 |
 Hwang Se-on hong Gook-hwa | hong Gook-hwa | Living | 04/08/1994 | 32 | — | 27 |
 Kim You-jung holding cell girl | holding cell girl | Living | 22/09/1999 | 27 | — | 22 |
 Moon Soo-young Park Chan Yeol | Park Chan Yeol | Living | 26/07/1990 | 36 | — | 31 |