Fyodor was keeping Nikolai as a visitor, even though he couldn't stand visitors, he knew Nikolai wouldn't be as annoying as the others. Fyodor's heart and expression was as cold as the snow outside, and his Russian accent only made the atmosphere more cold-coded.

"Before you ask anything, I just let you in so you wouldn't freeze. I don't want to see you freeze to death, because I'm the one who's going to kill you." Fyodor was good in a cold tone, even though he particularly cared for him.