"Frozen Fury!! Kamishiro Rio the Ice Queen" is the seventy-ninth episode of the Yu-Gi-Oh! ZEXAL anime.
An uneasy air hangs over Shark. Yuma and Astral think it has to do with an invasion by the Barians, but the real reason is his twin sister, Rio, whom is returning to school! Shark worries about Rio, who ends up being the center of attention when she returns to classes. While Shark bickers with her manager, Yuma and his friends find Rio while she's at Ikebana Club. Suddenly then, the Club's President, Aika, who has been brainwashed by Gilag, challenges Yuma to Duel. While Yuma readies his Duel Disk, Rio offers to challenge her instead!!
