An amateur woman seeking to please her boyfriend experiences a secret massage workshop! (Yuzu 109IENFH-31903)

When a men's beauty massage course was offered, a group of lovely girls eager to learn techniques to please their boyfriends participated. During the close contact with the male models and the use of slippery massage oil, the men's genitals bulged out of their paper underwear and became rock hard! That hard thing directly stimulated the girls' genitals through their underwear! And then it even penetrated through their underwear!?