One morning Sunao Moriyama, a male junior high student, finds a small, cute creature in his refrigerator. During breakfast, Sunao looks down at what he is eating, a bun with potato and mayonnaise filling, and decided to name the creature Potemayo. Sunao takes Potemayo to school with him and she is an instant hit with his classmates, especially the girls. While they are at school, another similar creature comes out of Sunao's refrigerator and makes its way to a park where Sunao and his class are spending an art class. Kyo Takamimori, one of Sunao's classmates, finds the creature and names her Guchuko. Unlike Potemayo, Guchuko is aggressively antisocial and shoots searing energy beams out of horns on the sides of her head when she is confronted.
This story has the part which was created by referencing Wikipedia, so the licence of GFDL is applied to this story.