Submit to a Sadistic Doctor

From Renta!: Forced to XXX by a horny doctor, a vibrator is shoved into my sweet recesses, and a flashlight is stuck inside and turned on for an examination... No matter how much I screamed and begged for forgiveness, he didn't stop until I fainted. Why? Because I'm his pet and can't disobey him. Mei, a doctor, rescued me when I'd collapsed from hunger in the street. He fed me, but because my diet's a little strange, he made a bargain. The deal was that in exchange for his giving me food, I had to be his pet and give my body to him......!