Fundamentally : Mustard tries to get over her grudge against tanuki. Hozuki would rather she not because of how well she channels the hatred into her work as a Hell Minion, but relents and takes her to a temple run by a tanuki.
Mixed Martial Arts Contest: Mustard wonders how strong she is, given she's a rabbit and many Hell minion animals are carnivores. To find out, Hozuki plans a animal fighting tournament, pitting her against animal minions.