Isshin Aioi

Isshin Aioi (相生 一心, Aioi Isshin) is Fumi's classmate and a 2nd year High School student.

Background
Aioi met Fumi ten years ago during the Little Racer's Fun Run.

With his parents always arguing, Isshin believed that if he came in first place that his family would go back to normal. But, after losing to Fumi, he began holding a grudge against her.

Later his parents split up and after his father remarried he made the decision to live with his mother.