[Darc growls an animal rumble and mounts him, pinning Shiro's thighs up and pushing his cockhead into his hole, spreading it open. Pulsing inside him, bit by bit. Shoving and squirming it in, feeling the resistance of Shiro's body, trying to listen to him and afraid to break him but so, so hungry to fuck inside him. The ribs and nubs of the shape of his cock and the metal pushed through it rub inside of Shiro, stretching him wide open and filling him up.]