Saya Akagi is an assistant professor at a private university who specializes in early modern penal history. - However, it wasn't just a matter of research; he became intensely sexually excited by the cruel paintings of the Edo period, and had a tendency to indulge in intense self-bondage masturbation night after night. - Under that plain teacher's uniform, there was a well-ripened body that couldn't be hidden, but Saya was lured into the heinous captivity dojo by a student who had felt a strong desire for Saya for some time, and was trampled over. - The ripe areola and nipples are abused, and the exquisite ass is teased along with the anus and given continuous enema.