Sex research group of good friends high school girls

Our peaceful home has been transformed into a "sex research institute"!! A group of four school girls with sexual addiction are creampie parties under the guise of "research"!! The four of them visit a man they met on a teleclub, forcibly occupy their home and attack the man!! Teasing blowjobs, squirting cowgirl position, making a creampie baby, and more! Feel free to do whatever you want to try! An disorderly sexual experiment conducted until the sperm runs out!!