Yu-Gi-Oh! Go Rush!!

That Guy from the Future (1x39)

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Something abnormal happens to Yuna during the Duel with The☆Lugh, but she is saved by a boy. He's the same boy who once entrusted Yudias with a Duel Disk and some cards. In order to turn the Duel around, the boy from the future takes over for Yuna and fights alongside Yudias against The ☆ Lugh !