Ai to Kemono to Jukkai to

Aiko and her grandmother have to pay off Aiko's mother's debts. Thugs constantly bang on their apartment door to collect the money. One day, a boy named Inui puts the thugs in their place and from then on saves Aiko from risky situations more and more often - even if it means transforming himself into a hellish wolfhound! But her savior is involved...