Could He Be a Girl?!

Our classmate Chu is 21, a sophomore, and has, how should I put it, a very feminine face: a tapered chin, double eyelids, long eyelashes, a small, adorable mouth, and a tiny nose. Every feature adds up to a beautiful girl's face. Luckily, his bangs cover most of it, so people don't mistake him for a woman completely... But one day, he inexplicably turns into a real girl, and his roommates begin to wonder one after another: Could it be that he was never a boy?!