You and I
Boram as herself
Boram is the producer in Empire entertainment,she often helps both rap monster and qri with their music. Then she is also the former girlfriend of Kai,since she used to produce his music for him.
Eun jung as herself
Eun jung is also a producer,but she produces music for her best friend former boyfriend Kai. She also can be very annoying at times,even in serious situations.
Kai as himself
Kai is the complete opposite of his best friend rap monster. He is the biggest singer in korea for girls who love singing than rapping the most and he is even the son of koreas biggest singing company, Stardom entertainment.
Qri as herself
Qri is one of Koreas famous female rappers, every guy and girl in korea loves her and they even try to get her attention in everyway possible. She is also currently signed onto Empire entertainment which she is loved by all around her. Even though, she is a new artist for both the company and the fans she always manage to stay confidence and have hope.
Rap monster/namjoon as himself
Rap monster is koreas biggest rapper everyone in the rapping game is extremely jealous of him. Even all the girls love him because he is so hot, and even the fact that he is the son of Empire entertainment leading chairman.
Saki Nakajima as Lily
Lily is a half japanese,half korean girl who is forced to work in the music industry because when her parents died music was the only thing she knew of.