I ended up staying over for a few days with my sister's junior volleyball teammate, Yui, a college student. She has a quiet, makeup-free face... but her busty uniform is something you'd never imagine, and my dick, which has been abstaining from sex before the judo tournament, was the first to lose! When I fucked her firm ass from behind, she started to secrete a large amount of lewd hormones! After getting an erection boost from the sticky sperm-boosting food, she started to invite me next to her sister with no time in between, milking my sperm protein with her pumped-up vaginal muscles!