Anal Mania Otaku to Ananii Daisuki na Ojou-sama 2

Shizune's anal training was steadily progressing.

In the dimly lit gymnasium storage room, Shizune is suspended by her hands, in a humiliating position. Her feet are also bound, and her body is suspended in the air.

Liquid is injected one after another into her wide-open, exposed anus, and the liquid reaches her sigmoid colon, causing her rectum to swell, before a foreign object is thrust inside.