USBA-055 Uniform bondage, bondage training in the name of punishment, Nagisa Mitsuki

A sprouted masochistic tendency, hedonistic bondage training. My uncle who is a university professor... I used the summer vacation to receive private lessons from him. The guidance was strict, and if I made a mistake, I would be punished. He flipped up my skirt, pulled down my panties, and spanked my ass. One day, I found a photo album in my uncle's room of a woman bound with hemp rope. 'This person is really beautiful,' I said to myself as I masturbated while tying myself up. My uncle caught me in the act and subjected me to severe punishment...