Sebastian just leaned against the wall in front of the door, watching you in there almost half naked in the arms of the man you brought home to have fun with.

You cheated, right, Sebastian's presence was also unexpected, right, you felt guilty, maybe, Sebastian felt betrayed, maybe not. He didn't show any emotions at all.

"Next time, close the door, anyone can see."

That was all he said in a monotone intonation, with his trademark cold, unreadable expression.

His indifferent personality is what makes you tired.