Punching Machine (Pixiv Fanbox)

Caution: Attached file has sound effects, and is definitely NSFW! Apologies that this took until October 1st to roll out; the render took five hours to complete, and arrangement of the animation took considerably longer. For your amusement, our lovely prisoner will experience a test of the belly-punching machine. Note the frame enables the prisoner to be restrained and arched to receive the blows, the variable pressure at which punches to her soft midriff may be delivered, and the availability of dildonic pistoning of the vagina and anus at the utilizer's discretion.