KWON YURI.

A beautiful, talented. Aged 21. Used to be an exchange student in America for 1 year but came back to Korea after getting homesick. Has always had a great friendship with Sooyoung and Jessica since their high school days. Also good friends with Key and Jonghyun. Sensitive, trustworthy and nice. Always hears about Sooyoung's 'twin brother' but never actually seen him in real life. When she meets Minho in real life, she think of him as a terrible, rude, disrespectful person but as she gets to know him, she sees other sides of him and discover a little bit about his past...

CHOI MINHO.

A guy only who cares for his friends and family. Aged 21. Has a great trust on Jonghyun and Key, his two best friends. Lives in England with his parents, to get some business training. Has two sisters and 1 brother. Sooyoung is his twin sister, theyre not identical but they have very similar personalities. Siwon, 23, Minho's older brother, lives in Korea with only his 2 sisters. Sulli, 18, the maknae of the family. Hates most girls, except for his sisters and families, mostly because of his unknown past, which no one knows about including his two bestfriends. A playboy who dumps girls after he dates them at the maximum of a week, until he slowly falls in love with Yuri...

JESSICA JUNG.

A typical but warm hearted girl and a very good singer. Aged 21. She was born in America and lived in America until she made a decision to go to Korea, where her parents were born. She met Yuri  in America when Yuri was an exchange student and became very good friends then went back to Korea with her and still lives with her and enjoys life in Korea. Then the two met Sooyoung and the three became the bestest friends. She is also very good friends with Key. Jonghyun's ex-boyfriend, no one knows why they broke up and secretly misses him a little bit but lost contact with him after they broke up. She knows that Key is very good friends with him and they met a couple of times but never talked much. Goes to the same university as Yuri, Sooyoung, Jonghyun and Key. Her friends do know that Jonghyun and her were in a relationship...

KIM JONGHYUN.

A guy who loves music, loves singing and composing songs. Aged 21. Great friends with Key and Minho-even though he lives overseas. Still in love with Jessica and hasnt dated a single person after they broke up. Finally starting to give up loving Jessica since he doesnt get in contact with her except for going to the same university as her. Key, Sooyoung, Jessica, Yuri and Jonghyun are a group of friendsbut he always leaves first when he finishes eating lunch, to try and not give Jessica burden. Very nice and warm hearted when you get to know him..

CHOI SOOYOUNG.

A brave girl. Aged 21. Minho's twin sister. Sooyoung was born 3 minutes earlier than Minho so she always tries to make him call him noona but always failed. Met Jessica and Yuri in highschool. Also met Key and Jonghyun in highschool, became very close friends with Key and they still are. Loves shopping with Key because he always chooses the right style of clothes for her. Loves eating, lives with her brother, Siwon and younger sister, Sulli. She mostly cooks for the three of them and loves doing it. Dating a guy called Kyuhyun, who is a year older than her.

KIM KIBUM (KEY)

Aged 21. Real name is Kibum but likes to be called Key. Has been in love with Sooyoung for a very long time but doesnt want to tell her because he thinks that it'll ruin their strong friendship. Loves singing and dancing. Sometimes acts like a diva to his friends. Tried to get Jonghyun and Jessica to be good friends again but its never worked. Tallks and nags alot of people and because of that, he's sometimes nicknamed as a 'mum' Misses Minho alot, not only its because its one of his bestfriends, because Minho likes helping Key get closer to Sooyoung and tell him some information about Sooyoung...

OTHERS.

CHOI SIWON- Aged 23. Lives with Sooyoung and Sulli, his two sisters, CEO of Choi company Korea, while his parents are the CEO of Choi comapany England.

CHOI SULLI- Aged 18. In her final year of highschool, planning to go to England, where her parents are and study there in her future. The maknae of the family.