Characters: 

Lee Donghae: Son of owner of East Sea Hotels. Has an older brother. He's a secret romantic. He's childish and playful but mature as well. Though he's careless and likes having fun without caring about who he is and reputation. He pursues music in writing form that's why he created his own band though he's not the singer. He's a rebel and a troublemaker most of the time. 

•Leader and main guitarist of Lithium
•Captain of the soccer team. 
•One of the top ten Kingkas. 
•Rivals with Cho Kyuhyun. 
•Roommates with Kai and Hangeng. 

Lee Hyukjae: Daughter of owner of Lee Tech. Corp, has two older siblings. She's really kind but can be hot tempered. She loves to paint and dance also figure skate but it's more of a hobby (her mother was a pro and forces her to do it). She's a rebel when needed along with Heechul and a bit girly too. She's bubbly and selfless with a warm heart. 

•One of the prefects
•Captain of the dance and soccer team. 
•Part of the cheerleading squad
•Part of the Tech club 
•One of the top ten Queenkas 
•Dubbed the mini Heechul by Heechul herself. 
•Roommates with Amber and Jaejoong. 

Cho Kyuhyun: Son of a famous well known movie director. He is a player and evil prankster who is also careless about what he does. He's kind if you get to know the real him (or stay for long to even know him). He crushes easily but also gets bored easily. He's really smart and gets the best grades due to his mother being chairwoman of the school and constantly pressuring him. 

•One of the top ten Kingkas. 
•Leader and main vocalist of his own formed band called Toxicity. 
•Huge gamer and secretly a bookworm. 
•Member of the Tech club. 
•Rivals with Lee Donghae
•Roommates with Kangin and Sehun

Lee Sungmin: Only daughter of two very well known veterinarians with animal clinics around Asia who travel a lot because of it. Despite the distance she's really loved and spoiled by her parents. She's caring and kind if you like her too. She's also a diva and likes to have fun but not in a bad way. She's brave and funny. Also bubbly. 

•Co-captain of the martial arts club along with Tao
•Dubbed aegyo queen 
•Part of the cheerleading squad
•One of the top ten Queenkas
•Roommates with Kibum and Jungsoo. 

Han Geng: Aka Hankyung. Son of two famous chef with a chain of restaurants around Asia. He's been cooking ever since he could use his hands for that reason and loves it. He's cold and keeps to himself unless he's with friends. 

•Teacher of the cooking class 
•Captain of the martial arts club
•Captain of the dance club along with co-captains, Yunho and Taemin. 
•No interest in anything but cooking and hobbies. 
•Roommates with Donghae and Kai. 
 
Kim Heechul: Oldest daughter of a famous successful actor and model/designer. Grew up in fame and has many contacts due to her parents' job. You'd rather have this diva as a friend than an enemy (she's loyal too) and never mess with her friends and sister other than that she's really nice if you respect her and she dotes on her friends. She's really smart but doesn't show it. Also a beginning actress and model.

•Captain of the cheerleading squad and tennis club. 
•One of the top ten Queenkas
•Secret gamer geek 
•Loves Anime's & Manga's 
•Has a cat 
•Roommates with Ryeowook and Jessica. 

Kim Jongwoon: Aka Yesung. Son of owner of Konan Beans; a large extended coffee company. Has an older brother. He looks cold at first sight but is really nice and has a beautiful voice as well. Has an obsession over dying his hair. He hates being alone and is often called weird but he doesn't mind. He's really smart and charming. 

•Loves turtles
•Main vocalist of Lithium 
•Member of the soccer team 
•Roommates with Siwon and Zhou Mi  

Kim Ryeowook: Daughter of two famous well known doctors with their own hospital. Has an older brother. She's really smart and very sweet and nice. Has a very nice voice but wants to be a kindergarten teacher instead. She's by far the kindest of them all and easy to hurt which causes her friends to be overprotective of her. She's bubbly and friendly. 

•Part of the music and archery club (captain with a perfect aim; never misses her target) 
•Part of the cheerleading squad 
•Cutest nerd of the school
•Heechul's favorite dongsaeng
•Part of the tech club along with Hyukjae. 
•Roommates with Heechul and Jessica. 

Kim Youngwoon: Aka Kangin. Son of two famous well known doctors with their own hospital. Has a younger sister. He doesn't really have a dream so doesn't care about inheriting their hospital. Very overprotective of his "baby" sister. He's funny and kind but short tempered too. 

•Captain of the Taekwando club 
•Player type; changes girls once he's bored of them. 
•Prankster along with Kyuhyun. 
•Roommates with Kyuhyun and Sehun

Park Jungsoo: Daughter of owner and chairwoman of Sapphire girls academy. Has one younger brother. For that she tries extra hard on her studies and is well respected around school. Contrary to popular belief, she doesn't like taking advantage or even gloating about her status around school. She's very caring and trustworthy in a way she's like the counselor of the school due to girls always coming to her for advise or help. She's also one of the few that is new to feelings and relationships. 

•One of the prefects 
•Smartest girl in her grade 
•Student body president 
•Roommates with Sungmin and Kibum. 

Minor main characters(?): 

Choi Siwon: Son of owner of a game company. He's not really a gamer but he doesn't mind inheriting it. Hes very religious and respectful. He's a real gentleman and very popular among the females though he's currently in a relationship with the beautiful Kim Kibum and only has eyes for her. 

•Student council president 
•Dubbed "The Prince"
•Number one Kingka
•Had been crushing on Kibum for more than two years. 
•Roommates with Zhou Mi and Yesung. 

Kim Kibum: Youngest daughter to an actor and a model/designer. She's really shy and mistaken to be cold because of it. Grew up in fame/on the spotlight but unlike her sister she's insecure about it. She's the opposite of her sister but thanks to her boyfriend, Siwon, she grew to be more confident.

•One of the Prefects
•Has the best smile among all
•Part of the cheerleading squad 
•Model 
•Crushed on Siwon for a year before he grew the balls to ask her and she obviously said yes. 
•Roommates with Sungmin and Jungsoo.