Kotoko a third year student, fell in love at first site with Naoki Irie. But when she finally got the courage to give him a love letter. He rejected her saying, "I hate stupid women." Naoki is a genius with an IQ of 200 and a sports champion, popular with all girls. As if Kotoko's luck wasn't bad enough, her house gets ruined in an earthquake and they go to stay at her father's friends place while their house is rebuilt. By some twist of fate her father's friend is... Naoki Irie's father! Now Kotoko and Naoki have to live together?!