Seohyun
A transferred student who transferred from Geneva, Switzerland to Seoul, Korea. Many people admire her since she's caring, clever, kind-hearted and sweet girl. Besides of that, people also said that she's a pretty goddess that might came from the heaven. She isn't cold, she just doesn't know how to start a conversation with new people that she met. 

Tiffany
The most wanted student in Eun Hwa High School. Many people want to befriend with her since she's the most prettiest yet richest student in the school. She's also known as the "Queen" in the school since she has the personality of being a queen. She has a twin from Monsta X, Wonho, who shared the same mother but different fathers. She likes to annoy her twin since she is older him by 4 months.

Shownu
The leader of the most popular squad, Monsta X. He's the very first member who spoke with Seohyun and sometimes he even gives Seohyun the feeling of her being safe whenever she's around him. People used to say that he has a secret little thing with Tiffany, but both of them denied it and because of the rumor, their friendship is getting loss. In fact, he is Seohyun's first love.

Wonho
One of the most popular squad's members, Monsta X. He has a twin named Tiffany, both of them share the same mother but different fathers. Many people doesn't know about this thing but he is Seohyun's ex-boyfriend. They been a couple for 3 months, they knew each other by the social media and never date or meet in real life. So, Seohyun kinds of shocked once she saw Wonho in real life. 

Minhyuk
One of the most popular squad's members, Minhyuk. Many people admire him because he's so friendly yet playful boy. He makes a lot of friends, he even close with the teachers in the school. Since he's a very friendly person, he finally got to be Seohyun's male close friend. Other reason, he is Seohyun's seatmate at the class. He would always tries his best to make conversation between them both and makes her feels comfortable around him.

Kihyun
One of the most popular squad's members, Kihyun. He doesn't really that talkative and always keeps on his cold image, making female students fell for him. Yes, he likes the newbie student, Seohyun. But somehow there is one feeling that makes him wanting to bully her, ending up making her enemy. But actually they're friend-enemy, even though they assume each other as enemies but they still need each others as friends, or maybe not as friends. He is Seohyun's neighbour.

Hyungwon
One of the most popular squad's members, Hyungwon. He is known as the most handsome boy in the school since he works part-time as a model under his uncle's company. He'll always gets the most chocolates, roses, teddy bears, cards and many that related to 'love'. But, he never tries to look on those girls who are chasing for him. He promised to himself to not fall for any girls, but once Seohyun came in his life he confused either breaking the promise or not.

Jooheon
One of the most popular squad's members, Jooheon. He is the first member who falls for Seohyun that easily, he falls for Seohyun at their first meet. Wanting to know more about her, he decided to be a close friend with Seohyun. He'll always be there for Seohyun and always treats her foods. Minhyuk and him will always walk to the school with Seohyun every morning since they get into the same bus. 

I.M
One of the most popular squad's members, I.M. He is a playful male student who likes to play as if he's still a child. Since he speaks English fluently, he gets to be closer with Seohyun easily. Unexpectedly, Seohyun and him used to be best friend when they were childhood. So, when they knew about it, they try to make it happen again now but somehow the other members keep bothering their friendship since all of the members try to create a closer friendship with Seohyun.