Our Secret Diary (2023) featured a cast of 17 tracked actors. Of these, 13 (93%) are still alive today and 1 have passed away. The oldest surviving cast member is Yumi Mitani, age 75. This film starred Fumiya Takahashi and Hiyori Sakurada.
93% still with us· verified cast76% of full cast · incl. 3 unverified
Survivorship
Cast Reunion Index: 93% still living
Avg. Age at Death: 24 yrs
Deaths by Year
2025
Cast17 members
| Person | Character | Status | DOB | Age | DOD | Age in 2023 |
|---|---|---|---|---|---|---|
 Fumiya Takahashi Jun Setoyama | Jun Setoyama | Living | 12/03/2001 | 25 | — | 22 |
 Hiyori Sakurada Nozomi Kuroda | Nozomi Kuroda | Living | 19/12/2002 | 23 | — | 21 |
 Mizuki Kayashima Erino Matsumoto | Erino Matsumoto | Living | 06/07/2004 | 22 | — | 19 |
 Ryosuke Sota Haruto Yoneda | Haruto Yoneda | Living | 24/10/1997 | 28 | — | 26 |
 Nagisa Saito Yuko Hayashi | Yuko Hayashi | Living | 06/07/2003 | 23 | — | 20 |
 Mizuki Itagaki Hiroto Yano | Hiroto Yano | Deceased | 25/10/2000 | 24 | 17/04/2025 | 23 |
 Maru Kiuchi Saya | Saya | Living | 03/01/2002 | 24 | — | 21 |
 Coco Masui Moe | Moe | Living | 12/07/2006 | 20 | — | 17 |
Futa Kimura Ishii | Ishii | Unverified | — | — | — | — |
Yuuka Miku Setoyama | Miku Setoyama | Unverified | — | — | — | — |
 Hiroto Takahashi Sho Suzuki | Sho Suzuki | Living | 19/08/2000 | 26 | — | 23 |
 Riku Ichikawa Jun's Classmate | Jun's Classmate | Living | 24/01/1999 | 27 | — | 24 |
 Dandy Sakano Mathematics Teacher | Mathematics Teacher | Living | 16/01/1967 | 59 | — | 56 |
 Yumi Mitani Jun's Grandmother | Jun's Grandmother | Living | 23/11/1950 | 75 | — | 73 |
 Yuki Hirako Radio Station Director | Radio Station Director | Living | 04/12/1978 | 47 | — | 45 |
| Unverified | — | — | — | — | ||
| Living | 15/04/2002 | 24 | — | 21 |
