The teacher who came to improve her academic ability is a super gal older sister. She's a virgin who can't concentrate on her studies because she's worried about her sexy teacher. She is a gal teacher who tempts her by offering a reward if she solves a problem. Attracted by this, she takes control of the virgin boy who works hard and does whatever he wants. It seems that just having her son is not enough for the lewd teacher, so he even seduces the father and ends up having a threesome with his girlfriend! I have never seen such a lewd tutor. The most captivating tutor in Japan appears here!
