Roots of the Problem.After Yuma wins a duel against another Number holder, Astral sees a vision of the Earth's destruction while Bronk gets mad at Yuma for his reckless tactics. They get into a fight, and they refuse to talk to each other. Yuma tries to reconcile with him, but Bronk accidentally knocks away Yuma's key. The Number card Yuma had won, Number 96: Dark Mist, takes over Astral and holds Yuma hostage. Before being taken over, Astral instructs Yuma to give Utopia to Bronk, who is protected by Yuma's key, and Number 96 mentions that only Yuma's body was being taken over, not his mind. Bronk challenges Number 96 to a duel, who controls Yuma to duel for him and summons a copy of itself (Dark Mists' card form), Number 96: Dark Mist, and reveals the monster they saw earlier was a fake version of him. It has the ability to steal the attack points of other monsters. Bronk summons Utopia, but he gets overwhelmed by Dark Mist's ability. However, Yuma manages to follow Astral's advice and pretend to side with Number 96, in order to advise him to destroy the wrong card and forget about the catapult, allowing Bronk to use the catapult to win, which allows Astral to return to normal and reabsorb Number 96. When he does, Astral wonders if there are other Numbers like Dark Mist. Also, Yuma's friends try and give Astral the entire credit for the idea of tricking Number 96.