Characters:

Kim Minseo (OC)(You): 17 year old girl who is a SPY. Your are very INNOCENT, very quiet in school, and is nerd (To Keep Your Profile Low ). The agency you work at is called T.O.P. (You don't attend school there, because they won't let you. It's part of your training)
In your past / background. Your parents died because of an tragic murder. You become and agent and you try to find him and found out what happened in the past where your parents were killed 

Chunji:18 yrs old. He is a kingka, and is secretly in love with you. He is always stalking you and watching you closely so nothing bad happens. He does not know that you are a spy. But What if he follows you for too long and you end up dragging him into a mission??

You and chunji were friends when you were 12 but he got too popular and stop hanging with you 

Teen Top are the head masters in T.O.P. They attend T.O.P (the agency also has a school there!) 

L. Joe: 18 years old, shy quiet forgets members name, strong, brave, caring, Minseo's best friend

 

Ricky- in charge of aegyo,most of the time he is mistaken as the youngest.

Changjo- youngest, LOVES dancing, hates his cheek fat,

NIEL- LOUD. Talks A LOT, funny, very hyper and athletic 

C.A.P- shy, quiet, usually standing in the back,

Park Eunji- 17 years old. the queenka of the school. Very rude, mean, and snobby. (more about her past will be reveled.)