Satoshi Tsumabuki as Mr. Hoshi

Ren Osugi as Vice Principal Nishina

Tomoko Tabata as Ms. Ikezawa

Narushi Ikeda as Mr. Kowasi

Mieko Harada as Principal Takahara

Yūko Genkaku as

Ryohei Kondo as

Runa Natsui as

Itsumi Ohsawa as

Yumi Shimizu as Music Teacher

Pierre Taki as

Naho Toda as

Miki Hayashida as Keita's mother

Shinji Hiwatashi as

Haruna Amari as

Kazuya Ishii as

Minako Ban as

Masayasu Kitayama as

Takashi Kodama as

Takumi Kitamura as

Mion Kaneko as

Rishika Yû as