The Boy and I Who Will Break Up in 100 Days (2026) featured a cast of 10 tracked actors. Of these, 10 (100%) are still alive today. The oldest surviving cast member is Naoto Takenaka, age 70. This TV series starred Kentaro Ito and Kanichiro.
100% still with us· verified cast
Survivorship
Cast Reunion Index: 100% still living
Cast10 members
| Person | Character | Status | DOB | Age | DOD | Age in 2026 |
|---|---|---|---|---|---|---|
 Kentaro Ito Yuma Kasuga | Yuma Kasuga | Living | 30/06/1997 | 29 | — | 29 |
 Kanichiro Itsuki Hasegawa | Itsuki Hasegawa | Living | 16/08/1996 | 30 | — | 30 |
 Yui Narumi Shiho Kayano | Shiho Kayano | Living | 16/05/1998 | 28 | — | 28 |
 Kento Yamada Yamada Kentaro | Yamada Kentaro | Living | 20/09/2004 | 22 | — | 22 |
 Masumi Nomura Mori Naomi | Mori Naomi | Living | 10/10/1990 | 35 | — | 36 |
 Kaoru Mitsumune Katagiri Asuna | Katagiri Asuna | Living | 26/04/1993 | 33 | — | 33 |
 Asuka Kudo Kubota Shinya | Kubota Shinya | Living | 01/08/1991 | 35 | — | 35 |
 Naoto Takenaka Hinode Isao | Hinode Isao | Living | 20/03/1956 | 70 | — | 70 |
 Tatsumi Asa Shibazaki | Shibazaki | Living | 27/08/2000 | 26 | — | 26 |
 Masahiro Toda Yuma's Father | Yuma's Father | Living | 28/03/1968 | 58 | — | 58 |