Mischievous Kiss / Playful Kiss

Oh Ha Ni is a 17-year old student who belongs to the "F Class", which includes the students with the worst grades in the whole school.

Being bubbly and cheerful, Ha Ni believes that happiness is not all about grades and looks. No matter how many times she falls, she'd still get back up every time. She doesn't get embarrassed AND this word does not exists in her vocabulary. Her father, a noodle restaurant owner has solely raised her since the time her mother passed away.

Baek Seung Jo-- the school's genius, captured her heart since the first time she sees him. A perfect student with handsome face, long legs, model-like figure. Although not one student has successfully captured the heart of this guy, Ha Ni is determined to stick until the end.

One disastrous day, Ha Ni and her father soon find themselves with no place to stay. Nowhere else to go, her father agreed they stay with a friend for the time being. It may cupid's way of sending Oh Ha Ni to her heart for the place they'll stay is - Baek Seung Jo's house.