Broken Beauty

Tae is in an abusive relationship and very depressed. Nobody at college seems to notice.
Bogum loves Tae and thinks he has to keep him scared to keep him, threatening him to keep covered at school and not talk to anyone. Bogum is out of college and doesn't like when Tae isn't in his presence to keep him under control.
One day, a tall new student walks into the college Tae goes to and notices the sadness in the beautiful boy he is told to sit with.
What could an angelic boy like this have to be sad about?