You ran away from your home. Why? Because you parents weren't interested in making you study, since you're a girl. Your friend managed to find a university in affordable price but when you ran away and met her near the university you got to know it's only boy university. But you still went inside because you can't go back now matter what.

You were assigned your room with Jungkook. Now you were standing in the room a little scared because it's a boy university and you'll be sharing a room with a boy. You acted like a guy.