Unknown (2023) featured a cast of 15 tracked actors. Of these, 15 (100%) are still alive today. The oldest surviving cast member is Hana Kino, age 78. This TV series starred Mitsuki Takahata and Kei Tanaka.
100% still with us· verified cast
Survivorship
Cast Reunion Index: 100% still living
Cast15 members
| Person | Character | Status | DOB | Age | DOD | Age in 2023 |
|---|---|---|---|---|---|---|
 Mitsuki Takahata Kokoro Yamihara | Kokoro Yamihara | Living | 14/12/1991 | 34 | — | 32 |
 Kei Tanaka Toramatsu Asada | Toramatsu Asada | Living | 10/07/1984 | 42 | — | 39 |
 Keita Machida Keisuke Kagami | Keisuke Kagami | Living | 04/07/1990 | 36 | — | 33 |
 Kumiko Aso Iori Yamihara | Iori Yamihara | Living | 17/06/1978 | 48 | — | 45 |
 Kotaro Yoshida Kaizo Yamihara | Kaizo Yamihara | Living | 14/01/1959 | 67 | — | 64 |
 Shinya Kote Yukio Yoyozuka | Yukio Yoyozuka | Living | 25/12/1973 | 52 | — | 50 |
 First Summer Uika Matsuri Igarashi | Matsuri Igarashi | Living | 04/06/1990 | 36 | — | 33 |
 Yuki Inoue Ren Yamihara | Ren Yamihara | Living | 06/06/1996 | 30 | — | 27 |
 Ryosuke Sota Daigoro Igarashi | Daigoro Igarashi | Living | 24/10/1997 | 29 | — | 26 |
 Seiya Osada Seiya Niwatsuki | Seiya Niwatsuki | Living | 16/08/1989 | 37 | — | 34 |
 Shinya Niiro Hajime Minamijuji | Hajime Minamijuji | Living | 21/04/1975 | 51 | — | 48 |
 Yoshi Sakō Genji Niwatsuki | Genji Niwatsuki | Living | 15/11/1958 | 67 | — | 65 |
 Hana Kino Ume Imafuku | Ume Imafuku | Living | 08/01/1948 | 78 | — | 75 |
| Living | 22/10/1991 | 35 | — | 32 | ||
 Kohei Arakawa Reporter | Reporter | Living | 07/09/1979 | 47 | — | 44 |
