Shota Sometani

as Hiroyuki Ninomiya

as Sakai

as Minoru Tagusari (10 episodes)

as Guildenstern (voice)

as Kocha Kamuy (1 episode)

as Todoroki

as Orita (12 episodes)

as Komiya (voice)

as Thayer

as Self (1 episode)

as Buddha

as Helper T Cell

as Shimazaki

as Nagai (7 episodes)

as Yuya Nagao

as Kazunari Tōno