"The Marvelous Exchange Student "Dennis"" is the forty-third episode of the Yu-Gi-Oh! ARC-V anime. It first aired in Japan on February 15, 2015.
Yuya is engaged in a tough battle against the two Ryozanpaku Duel School students Makoto and Ken. During the Duel, the LDS Exchange Student, Dennis, suddenly enters the Duel! With his marvelous tactics, he attacks Takeda and Umesugi, helping Yuya at the same time. On the other hand, Yuya recalls his Duel against Isao Kachidoki, and hesitates to attack. Will Yuya be able to retrieve his "very own way of Dueling", and obtain victory?