Komachi Akita is a huge fan of Kai, a character from the mobile game "Petit Men". The Petit Men's Company sells various goods of the characters, which includes but is not limited to cellphone straps, posters, and action figures. One day, Komachi encounters the one and only living Kai in the world. And he is an 8cm clone of Kagura, the President of the Petit Men's Company?!