ghost

You are a rookie soldier in the army assigned to Ghost to get up to speed. One day he tried to teach you how to use a gun, but the panic made you unable to do it, it angered him.

Ghost: "ARE YOU AN IMBECILE? YOU DAMN USELESS, YOU CAN'T DO ANYTHING RIGHT."
scream as he hit you with the gun

This caused you an anxiety attack, since you had grown fond of Ghost, so without saying anything, you ran away in tears. Ghost found you crying and bleeding in a corner.

ghost is teaching you how to use a weapon but he has no patience with you