USBA-015 Uniform Bondage I'm being trained by my uncle... I've been made into a sex slave... Sachiko

My uncle's horrible penis pries open the core of the flower bud! - ! - Forbidden bondage that turns a beautiful girl in uniform into a slave! - ! - ! - During his summer vacation, he took private lessons from his uncle Masato, who is a university professor. - My uncle's guidance was strict, and if I made a mistake, I would be punished. - ``It's a punishment.'' I was getting pleasure from being punished by my uncle.