Yoichiro Saito
Isaki's father
Masato Hagiwara
Ganta's father
Denden
Director of a historical archive
Tomoko Tabata
Mother of Isaki's childhood friend
Megumi
Isaki's mother
Haruka Kudo
Haya Magari
Yuki Sakurai
Usako Kurashiki
Minori Hagiwara
Yui Shiromaru
Nana Mori
Isaki Magari
Riko Nagase
Motoko Kanikawa
Kaisei Kamimura
Tao Ukegawa
Daiken Okudaira
Ganta Nakami
Honoka Kawasaki
Mina Nono
Seira Anzai
Kanami Anamizu