Sooah is outgoing. She is a very outgoing, friendly and very formal girl. She is bold with her words, for example: blatantly talking about idol groups she likes with her friends. She comforts her friends when they are in trouble. She is faithful all the time. Very cute and friendly but a little sensitive at times

Cool, pretty, outgoing

Soojin was a very cheerful and nice friend and she used her bad girl attitude to protect herself or her friends from harm. A childhood friend of Suho and she has a crush on him. Soojin has a very hard to like personality. The fact that she comes from a troubled family, among other reasons, makes her take out her frustration on the people around her. She maintains a nice girl image in public and uses her beauty to manipulate others.

Smart, pretty, popular, rich

Shin Sol-I is a cheerful and passionate young woman, a high school teenager who has been in love with her neighbor and classmate, Cha Heon, for years. With an expansive and naive personality, Sol-I often ends up seeing herself rejected by Cha Heon, who is colder and more distant at first, but her passion never fades and she remains firm in the idea of being able to conquer the boy one day. Sol-i is a seal and a very good friend, kind and loves going out with her friends, likes romantic things. 

Cute, kind, friendly, lively, naive

Nayeon is a spoiled girl from hyosan high school, she thinks more than other people for being rich and living in the best condominium in hyosan, she hates gyeongsu a poor boy who studies with her and invades her private condominium.