The bottom was ordered to kill the WOlF top, the bottom just got release from prison that time, the bottom has a younger sister, and when the bottom got to the tops house to kill the top, the bottom got caught and they bombaya
Boy this is incomplete, do you remember what happened next? Does the mc have a brother or what?
The top have a cousin/brother (he is the one that order the bottom to kill the top)
And the top's father is abusive
If the top is a werewolf then this is it - https://www.mangago.zone/read-manga/bittersweet_howling/
The bottom was ordered to kill the WOlF top, the bottom just got release from prison that time, the bottom has a younger sister, and when the bottom got to the tops house to kill the top, the bottom got caught and they bombaya