I was staying at my aunt's house in Tokyo to attend a martial arts event. I hadn't seen my aunt since I was a child, and she was beautiful even with her age, and above all, she had an incredible mature sex appeal. I couldn't take my eyes off her big ass, wrapped in denim, even though she didn't realize it. I couldn't resist the sight of my aunt's big ass jiggling as she cleaned in front of me, so I immediately fucked her! Then she came instantly, and her pussy squeezed my dick! What...! This feeling! After experiencing my first convulsive vaginal orgasm, my erection wouldn't subside even after I ejaculated, and she milked my semen from my vagina over and over again. This is a video recording of the few days I spent obsessed with my aunt's convulsive vaginal orgasms.