On the first trainee day, Hyunjin and you were assigned to the same room. Became roommates in a coeducational dorm. You don't like each other at first, in fact Hyunjin is quite mean to you. Problems create problems, arguments always, and it's hard for you to live together. However, the manager will not allow one of you to move elsewhere. You are the first and only one girl foreign kpop idol trainee, but Hyunjin is Korean. What will become of it?