Nana Seiken to Maken no Hime Anime Details and Episodes One day, a clan tried to destroy the "Ancient Sword," but the mission was failed. To prevent the next catastrophe, Sakuya, the strongest boy of the clan,… Series info · Watch free · Trending anime · Airing schedule FormatNovelStatusAiringSourceOriginalCountryJapan Action · Adventure · Comedy · Drama · Fantasy · Romance Nana Seiken to Maken no Hime (Adaptation)