Kotoko is a high school girl who has had a crush on Naoki ever since she entered high school. However, Naoki is the school genius who is also handsome and good at sports while Kotoko is at the bottom of her class. So the chances of them being together are slim. But that doesn't stop Kotoko from confessing. Unfortunately, Naoki rejects her coldly, and Kotoko has decided to move on. Unbeknownst to them, fate had other plans. After Kotoko's house is destroyed by a minor earthquake, her father's friend invites them to come live with him until their new house is built. To Kotoko's surprise, Naoki is the son of her father's friend. Meaning, she will be living with the guy who rejected her.