Yu☆Gi☆Oh! Duel Monsters GX

Synopsis

Jaden and his friends have safely made it to their graduation ceremonies. That evening, a thank-you party is held, but Jaden is nowhere to be found there. In his dorm, he plans to pack up and venture out on his adventure ahead, When winged Kuriboh has appears in front of him and led him to the exhibition gallery. There, Yugi Muto was waiting, and tells him that it's time to begin the real graduation duel. Yugi informs a doubtful Jaden that Jaden has gained a lot of power over the past three years, but has lost something special, and that he must retrieve it. Once he holds his card over the deck, a timeslip to the world of the past comes from out of nowhere. Waiting there is Yugi from the past, which, by dueling him, will allow that special thing to be retrieved. The duel begins, and when the Duel starts heating up, Yami Yugi takes over the Duel, sensing that Jaden is a powerful opponent.

(Source: Wikipedia)