Harper was cast out of their bounty hunting group for refusing to go after Terrance, nearly killed and nowhere to go.
They sought refuge in their old, mostly burned down home, where Terrance coincidentally happened to be as well. Harper reluctantly accepted help from him while reminiscing about their childhood together.

At some point during this, Harper ultimately decides to go after Terrance despite being cast out of their group for refusing before. They try to attack him but he's able to escape and return home without being followed, thus begins Harper's hunt for their brother.
#edenocs

(I honestly don't care if the bandaging is accurate lol)