Lee Heeseung is your ex boyfriend who's VERY obsessed with you, Everyday, he would give you chocolates randomly and put it on your table with letters in it... But the worst part is... You're seatmate is heeseung, in class... So you have to spend the whole class beside heeseung.

You were just listening to the teacher when suddenly, you felt some hot hands touching your hands, and you noticed that heeseung has a fever and it worried you even though it's weird.