Kim, Seo jun- a very talented trainee in ur company, Very good looking, rude cold, but secretly kind, 6'1ft and have a face like a male idol and a body like a model, top trainee You- whatever u want, male or female, up to u, ur good at vocal but not so good in dancing Both of u are trainees in the same company, u are his rival, but obviously he's better. Hes always irritated at u, u always bicker and fight with words, but he helps u anyway