Yugisa-machi, a town lined with western-style houses. It was the previous autumn when the boy met a group of girls with animal ears and ended up working at the same coffee shop. The day after Christmas, the boy meets a lost girl. The girl was looking for a Japanese-style sweet shop, which is rare in the town. When the boy dropped the girl off, he was greeted by her sister, the owner of the store, but then he noticed something.

Yes, the sisters had grown magnificent rabbit ears! He meets a shy younger sister and a slightly clumsy older sister. He is also assigned to work at the popular cake shop "Sweet Tail" and the newly opened sweet shop "Mochizuki", which keeps him busy.