The stage is an elementary school in the suburbs of the big city in Japan in 1980's. A story of the time when there was not yet a convenient mobile telephone or a portable game console. One who changed school in the elementary schoolIt is a story to surround a transfer student and classmates.
At dusk of one day, Yoko saw one truck during leaving school. What there was on there... .
One transfer student comes over the next day in the class. The child named Murakami was that child who got on a truck yesterday who did the figure of "the animal". Next Murakami who sit down in its seat who was not crowded next to a proton. In a class, may Murakami get along well as expected from now on?

- Murakami -
The boy who did the figure of the animal which changed school in the character Class 4 of the third grade. Other than what I transferred from the suburban town to, it is wrapped in a mystery. An animal action is brought into question.... .

- Yoko katakura -
The chief character of the story to sit down next to a seat of Murakami. As for the considerate one side to worry about whether you can do it well while half hating an action of Murakami.

- teacher-
A class teacher of the Class 4 of the third grade, the veteran of the odd number during 40 generations. The tender teacher whom I am very fierce, but think of Murakami of the transfer student when angry. I am married.