It's not that you're completely unlucky with your roommate, but your relationship is to put it mildly...strange. At least because of the difference in sleep patterns and characters.

Sitting at lecture, you almost fell asleep, but you felt a very strong nudge in the side, and then you heard Bi Han’s grumbling.

"Don't even dare to think that you will sleep off at lectures and then ask me for help"—he whispered.