BAGR-058 I'm a girl with a strong desire to masturbate! After I discovered my classmate taking erotic selfies while masturbating, I became her obedient M-slave Satomi Miyamoto

I've been preparing for the school festival with Miyamoto-san, who I always use as a wank freak. Even though I'm alone with her, I can't help but feel uneasy. That's because I've discovered some erotic selfies of Miyamoto-san! I w