Kitamura Kaito as Iwase Ken (third grade)

Nagasawa Masami as Yoshida Rei

Matsumoto Tamaki as Yoshida Rei (third grade)

Hashimoto Kurumi as Yoshida Rei (primary school)

Fujiki Naohito as Tada Tetsuya

Eikura Nana as Oku Eri

Hiraoka Yuuta as Enokido Mikio

Hamada Gaku as Tsurumi Hisashi

Mikami Hiroshi as Yosei

Matsushige Yutaka as Itou Matsunori

Yamazaki Shigenori as 御法川潤蔵

Morimoto Leo as Yoshida Takashirei

Miyazaki Yoshiko as Yoshida Reina

Watabe Gota as Nedu Shigeto

Kikuchi Kenichiro as Nishio Tamotsu

Takeuchi Tomoya (classmate)

Okawa Masahiro (classmate)

Arai Kenta (classmate)

Ikezawa Ayaka (classmate)

Masumoto Yuko (classmate) * Sakai Toshiya as a taxidriver, staff of a universtiry (ep1, 5)

Troare Issa as the runner in the marathon (ep1,2)

Toji Takao as the Koshien Umpire (ep1)

Matsumoto Rio as Cameron (ep3)

Hoshii Nanase as Nagase Misa (ep4)

Hara Fumina as Matsuki Yuko (ep4,5,6)

Natsuyagi Isao as Yoshida Futoshi (Rei's grandfather, ep5)