Han Eunki (You), a normal 15 year old teenager who goes to one of the worst schools of seoul called Woollim High. Likes drinking, smoking, bullying and suprisingly, angels. 

Myungsoo, a 17 year old senior who goes to the same school as you. Hes the school smartest guy, can be compared to the best school in korea. Only goes to your school because he can't afford the school fees. Secretly an angel sent to guide you until you find purpose in life.

Byunghun, 17 year old senior. Your best friend whose your partner in crime. Listens to everything you say and has a thing for you. The schools 2nd smartest person. Dislikes how Myungsoo is always clinging onto you and follows you everywhere.