[DV-1491] Currently conducting an experiment for dick research. She rocks her hips in cowgirl position, but is thrusted hard from below and cums instantly. They also rock each other hard in reverse cowgirl. Even when she cums from thrusting upwards, she con (Censored)

Kojima Mina is studying cock. She rocks her hips in cowgirl position, and then gets thrusted hard from below, and cums instantly. In reverse cowgirl position, they both rock their hips hard, and Kojima Mina cums as he thrusts hard from below. Still, he doesn't stop thrusting, and she's dizzy. In missionary position, he thrusts hard deep, making her sweat, and they both cum together. Then, in Kojima Mina's first experience, she rubs the head of the penis, making it squirt.