S1·E5 Flipping Out, Part 1

A strange shadow approaches Yuma, which turns out to be Tokunosuke Omoteura, a classmate of Yuma's known for his duplicitous tongue. In the morning, Yuma was reprimanded for a prank he pulled in front of the whole class that he has no memory of causing. As a result, he's been cut off from every one else. Tokunosuke gently says "Let's Duel". With "Baby Tragon" his new Xyz Monster, Yuma might enjoy this duel, but Tokunosuke seems to be planning something.