"Our cat might be turning into a nekomata..." A rural town where youkai, people and gods live normal, everyday lives, mixed with a bit of warmth and occasional mystery. One summer, the twenty-year old cat Buchio suddenly evolves into a nekomata. Questioning the reason for his evolution, he sets out to learn more about transformation, together with the transforming kitsune Yuri. Muu-chan spies on the crow Tengu Jirou...