Watase runs a cafe in a certain town. Despite his refreshing appearance, he has a somewhat problematic personality, as he keeps switching partners and provides his customers with gifts from his sex friends.

One day, Watase receives a gift of sweets from Hayami, a pure-hearted, earnest-looking young man with a dog-like appearance whose ears and tail are visible. He frequently visits Watase's shop and studies hard until just before closing time.

Normally, Watase is the type who would never fall for his type, but he is intrigued by Hayami's obvious affection for him, and so he invites him into his home.

However, the moment he inserts it, Hayami's behavior changes drastically...!?