Aspirant Nuru massage therapist's painful butt sex lesson

In a dorm room of a young college student, a group of three aspiring Nuru massage therapists are about to receive a harsh lesson in their line of work. Unbeknownst to them, their instructor has a rather unique way of teaching - a way that involves a lot of pain and pleasure intertwined. The girls are eager to learn and ready for the challenge, but what they're about to experience is far from what they expected. Their instructor, a dominant BDSM enthusiast, takes charge and proceeds to test their skills by having one of the girls pleasure him with her ass. He pushes them to their limits, making them explore every inch of his body, including his tight asshole. The lesson takes a turn towards brutal anal sex, leaving the girls in a state of shock and awe. The intense session leaves them with a newfound respect for their craft and a deeper understanding of the true nature of pleasure and pain in the world of Nuru massage therapy.