BRTH-013 - Real Onahole Conversion: Mio's Desperate Confinement Training

Perfectly confining and training Mio, who has a look and body that just begs to be bullied! Starting a human onahole raising project. Locking her in a cage, teasing her incessantly with a vibrator, and tying her up to smack her ass until it's red and swollen—it's pure bliss.