Need help finding manga

My dumbass somehow lost this manga i was reading anyway the main character becomes a servant of some dude but it turns out he's an enemy that killed mc's family or something like that so now mc has to kill his 'master'(???) They sort of fall in love with each other but mc is being told that he has to kill his 'master'
to avenge his family. Mcc ends up stabbing him but loves him as well so it's complicated. Master ends up surviving and that's where I stayed at