This Guy Is the Biggest Mistake in My Life (2020) featured a cast of 5 tracked actors. Of these, 5 (100%) are still alive today. The oldest surviving cast member is Mokomichi Hayami, age 42. This TV series starred Mokomichi Hayami and Airi Matsui.
100% still with us· verified cast
Survivorship
Cast Reunion Index: 100% still living
Cast5 members
| Person | Character | Status | DOB | Age | DOD | Age in 2020 |
|---|---|---|---|---|---|---|
 Mokomichi Hayami Amagi Kyoichi / 天城恭一 | Amagi Kyoichi / 天城恭一 | Living | 10/08/1984 | 42 | — | 36 |
 Airi Matsui Sato Yui / 佐藤唯 | Sato Yui / 佐藤唯 | Living | 26/12/1996 | 29 | — | 24 |
 Jingi Irie Natori So [Kyoishi's secretary] | Natori So [Kyoishi's secretary] | Living | 18/05/1993 | 33 | — | 27 |
 Moemi Katayama Ishikawa Ami [Yui's colleague] | Ishikawa Ami [Yui's colleague] | Living | 01/10/1990 | 35 | — | 30 |
 Show Kasamatsu Yuki | Yuki | Living | 04/11/1992 | 33 | — | 28 |