A tip from a certain instructor. There is an instructor who is using her plump body as a weapon for business purposes to attract customers. For the undercover team, she rubs her breasts together while stretching, starts a handjob, and even gives a blowjob under the guise of "refreshing the lower body"! In the end, it develops into a harem 4P, including the newbie! It's full-on erotic stretching!