Bang ________: You are starting college as an 18 year old girl. People who don't know you think you're cold and slightly rude, but that is just a mask. Inside, you're kind and always ready to help a friend. You've had some awkward experiences with guys in the past, so you just want to focus on your studies as you attend Seoul University, but that changes when you meet Yoo Youngjae.

Yoo Youngjae: A 19 year old sophomore, he is notorious for being a player, although he doesn't actually enjoy it. He never found a girl he could actually love because all the girls who do come to him either just fall for his good looks or for his money, until he met you. He's determined to make you like him back, but he's in for an adventure.

Jung Daehyun: A 19 year old sophomore also, Daehyun is Youngjae's down-to-earth best friend. While he doesn't approve of Youngjae's player habits, he still wants Youngjae to find the girl of his dreams and will do anything to help his friend.

Bang Yongguk: He's your 23 year old brother who just graduated from college. He's always there to give you advice when needed, and although he's slightly 4D, you still love him a lot. 

Choi Junhong: He's your 17 year old step-brother, but you think of him as as a biological brother. He's always fooling around and skateboards with his friends, and you can always count on him to cheer you up. He likes to go by Zelo.

Moon Jongup: He's your best friend since elementary school, and he's very close to Zelo as well. He's very innocent and naive, but will defend you like no tomorrow if he thinks you are getting hurt. There is no romance between you guys at all, and he's always willing to offer his shoulder for support when you need it. 

Kim Himchan: As your slightly erted 22 year old cousin, Himchan is Yongguk's close friend and treats you like his younger sister. He teases you the most but you can't help but grin at his childish actions.

Park Daehee: She's your new roommate at Seoul University. While at first you are wary of her, you two become close friends and she is a good outlet to let out some steam about guy problems.