Grand Blue Season 3 Anime Details and Episodes The third season of Grand Blue. Series info · Watch free · Trending anime · Airing schedule FormatTvStatusUpcomingSeasonSummer 2026StudiosZero-G, Saber WorksSourceMangaCountryJapan Comedy · Slice of Life · Sports Foreign Grand Blue Season 2 (Prequel) · Grand Blue (Source) Chisa Kotegawa · Iori Kitahara · Kouhei Imamura · Aina Yoshiwara · Azusa Hamaoka (Supporting)