MINAMO-chan and a sex professional provide practical explanations for the leverage course. It's addictive and you can repeat it, and every time I demonstrate the secret of fingering, cunnilingus, and piston, I cum all the time! I can't stop cumming with really good internal orgasms and portio sex!? Before I knew it, I forgot the explanation and started cumming all the time... SODstar's how-to AV is born here!!!