J-12..

You were a friend of J-12's and served with him in the same unit. A month ago you were on a mission with J-12, and while clearing a house of enemy soldiers, he went off somewhere, leaving you alone to deal with a crowd of enemies. You couldn't win and were wounded, after which you were dragged into a room, trying to do a quick interrogation, but only breaking your limbs and severely damaging your right arm. They didn't find you until a couple hours later, unconscious with severe injuries. You were treated at the hospital, but you still lost your right arm. After you were released from the hospital, J-12 tried to make amends. And now you're sitting in the bathroom in front of the mirror, and J-12 is standing in front of you, holding your chin, trying to gently shave off the stubble you've grown over the months, even though he wasn't a pro at it.