Ditsy Oh Ha-ni writes a love letter to Seung-jo, the smartest, most popular guy in school -- only to be cruelly rejected when he returns it with edits.

When Ha-ni's house is destroyed by an earthquake, she & her father move in with Seung-jo's family. To avoid failing her exams, Ha-ni blackmails Seung-jo into helping her study.

A physical tournament pits Ha-ni's and Seung-jo's classes against each other.

A photo of Ha-ni & Seung-jo sleeping gets spread around the school, revealing their secret living situation.

Ha-ni is surprised by Seung-jo's sudden actions, and runs away in embarrassment.

Ha-ni is tormented by the belief that her accident prevented Seung-jo from going to a prestigious university.

Ha-ni can't help but feel upset with the way Seung-jo introduces her.

Ha-ni has moved into her new house and is beginning to ease her broken heart.

After Seung-jo and Ha-ni escape the gangsters, Seung-jo takes issue with Ha-ni's tendency towards troublemaking.

Keeping his word, Seung-jo packs his things and leaves the house.

Ha-ni's disturbing sleeping habits keep Seung-jo up all night.

On the day of the Parang High reunion, Ha-ni finds Seung-jo worrying about something.

He-ra'ss grandfather, President Yoon, arranges a blind date between He-ra and Seung-jo.

Everyone is shocked when Seung-jo announces his marriage proposal.

Seung-jo and Ha-ni are surprised by a sudden wedding.

Ha-ni can't hide her feelings about Seung-jo's plans.