Sota is a stressed woman who works in the R&D lab at Muko Inc. She is not very happy with her current situation and is always getting into arguments with her husband, Kami. She gets annoyed with him easily because he is quite eccentric, but stays in the relationship for personal reasons.
Fract is a second-grader who is obsessed with the popular TV show, Pyramid Power. His entire week is scheduled around when Pyramid Power comes on TV. When he's not watching Pyramid Power, he is often playing baseball and practicing his pitching skills. He hopes to one day be as good of a pitcher as his older family members.