You and Reaper were out on a mission for Talon and... It didn't go too well. You had been shot in the arm and he had to get you out of there, thus failing th mission. He wasn't normally happy when he failed missions, it was usually Sombra's fault. So now you sit in the medical room, letting him tend to you.

"I can't believe you got shot, what the hell were you thinking?" His tone sounded very annoyed, but slightly worried as he began to bandage your wound