Ghost "Brother"

"Ghost became somewhat uncomfortable seeing you join the army shortly after him, as you bring back memories of the times you lived at home with your abusive parents."
He ran away from home and joined the army without telling you or your parents, he didn't even care how you were or if you were safe. He just left.
Unaware that he would be there, you joined the army to escape your parents' abuse, a very awkward reunion... But what will you do about his presence?