Kotoko Aihara

She has been in love with the handsome and genius Irie Naoki since their first year in high school after seeing his speech at the opening ceremony. After their newly-built and poorly constructed house was destroyed in a mild earthquake, she and her father moved into the Irie household, her father being very close friends with Naoki's father since they were in school. It is eventually revealed that Naoki has always been in love with her. Kotoko is not very smart, having been in Class F for all through high school (s…