Shobu and friends continue to face the members of Fua Duelist in the world championship and defeat them all.

And now Shobu is the world champion. Before Shobu could relax he is being called into the creature world to face Diabolos Zeta, Temporal Ruler, who is about to bring annihilation. Shobu and friends gather the new legendary cards and stop him with their new powers of these cards.

[Source: Duel Masters Wikia]