Blue Box Season 2 Anime Details and Episodes The second season of Ao no Hako. Series info · Watch free · Trending anime · Airing schedule FormatTvStatusUpcomingSeasonFall 2026StudiosElectric CircusSourceMangaCountryJapan Romance · Slice of Life · Sports Primarily Teen Cast · Heterosexual · Iyashikei · School · Male Protagonist · Coming of Age · Badminton · Acrobatics · Shounen · Female Protagonist Blue Box (Source) · Blue Box (Prequel) Chinatsu Kano · Taiki Inomata · Kyou Kasahara (Supporting) · Hina Chouno (Supporting) · Kengo Haryuu (Supporting)