A world where not only humans but also various talking creatures exist.

The setting is an elementary school in an experimental city floating 150 kilometers above the ground.

A girl is late for school. As punishment, her homeroom teacher, an ogre, orders her to clean the warehouse in the experimental city.

There she finds a mysterious cat. Guided by it, she finds and opens a forbidden box.

In that box is locked a creature that will destroy the world....

In an absolute situation, what do the protagonists touch, what do they worry about, what do they choose not to .............

This is the everyday life of another world you touch and want to exist.

There is no escape from the everyday.