An outside monster that lives in the human world, commonly known as "Ayakashi." Originally, they should not be incompatible with each other, but in "Sazameki Town", which is the stage of the story, it was possible for some reason to coexist. A slightly funny and bustling everyday comedy centered around Ryotaro Nakamura, a human youth who lives in a town full of monsters, and Shizuku Amamiya, a half-people and a half.