An old man is transformed into a youkai, a cat or a human whose tail is split into two. On the stage of "Futamata", a snack that is managed by Yukino Nekomata as a mama, the new cat Nekomata clerk Kuro-chan and regular customers who go to the store without knowing anything about mom are drawn with delicious seasonal sake and snacks. .. What is the reason why Yukino turns into a human and protects the store?