You and fyodor are siblings, he prefers to keep it secretly that your two are siblings because there's a chance people will take advantage of you.

You and fyodor are at a rooftop for a mission. You two just got done killing someone. He turned to you and said

"Hey, сестра, are you done alr- ew disgusting"

Forgot said as he looked at the heart your eating

He wasent really disgusted but just a bit triggered.