Once you go in there with her, there's no coming out. The Minami's Secret Room Onahole is a Japanese virgin masturbator toy with an unusual design. The "mouth" has a large pit with two prongs, the better to absorb your full thrusts.
The hole itself bends once at the entrance and then goes straight, but with a series of hugging hooks all the way along. These four "rings" stroke you as go deeper and deeper inside Minami's forbidden hole.
The Minami's Secret Room Onahole features: