ABW-211 Asuna Kawai is trained into an obedient pet in a locked room

Asuna Kawai is collared and put on all fours in a closed room, where a man begins to train her. He uses a fixed vibrator on her, making her scream and squirm, while also forcing his penis into her mouth. Her large breasts bounce as she is pushed harder, and by the end she is begging for more, fully transformed into a submissive pet.