Zatch Bell!

Invitation to a Duel (1x44)

:

A mamodo named Bari and his partner Gustav defeat a Mamodo. Bari feeling unsatisfied in his battles, decides to go to Japan where a strong Mamodo named Zatch resides. Bari finds Zatch and tells Zatch they shall battle in a factory three hours from now. Zatch and Kiyo arrive to the factory where they learn that there are still civilians in the factory. Zatch manages to save the civilian while Kiyo distracts Bari's attention. As Bari is about to strike Kiyo down, he hesitates due to Kiyo's eyes. Bari prepares to finish Kiyo off but Zatch manages to stop him in time. With no distractions, Kiyo and Zatch prepare to face Bari and Gustav.