Fresh from a break up that left Sua with just a small regret. She knows it was wrong but she needed to keep it that way no matter how much her heart longs for her. Siyeon is a nurse who has witnessed Sua come in and out of the hospital too many times than a normal person in a year. 

It's Yoohyeon's first day going to Hogwarts and there she has no knowledge of what to expect from it. 

Jiu just broke up with Yoohyeon and guess who has to pick up the pieces. That's right her best friend Sua.