Hiiragi Yuzu is one of the main characters and a childhood friend of Sakaki Yuuya. Her father owns You Show Duel School, the Duel school that she and Yuuya attend, where they spend their time honing their Dueling skills. She uses a Melodious deck. Like Yuuya, she also has dimensional counterparts: Selena (Fusion Dimension), Rin (Synchro Dimension), and Ruri (Xyz Dimension). According to Akaba Leo, Yuzu and her other dimensional counterparts are crucial to his plans.