"Ayu's Entertainment Aquarium" is the twenty-eight episode of the Yu-Gi-Oh! ARC-V anime. It first aired in Japan on October 19, 2014.

The Maiami Championship finally kicks off. Following Futoshi's smooth victory as the first representative for You Show Duel School, Ayu is next to Duel for the Junior Division. Ayu's opponent is Reira, known as "The Treasure of Leo Duel School". In contrast of the enthusiastic Ayu who receives the support of everyone, Reira seems to be afraid of something. While Reiji and Himika Akaba watch, Reira utilises a strange strategy to copy Ayu's monsters.