My friend's wife is a lewd private tutor

I've finished three years of university entrance exams, and I've finished three years ago. Unable to be awaited, his father asks Reiko, the wife of a friend who had previously been a private tutor, to become a private tutor. Reiko, who agreed with her, immediately taught Wataru how to study. The cleavage peeking through between Reiko's shirts, Reiko's breasts sticking to her arms, as she is passionate about her studies, and her panties are visible through her thighs. Wataru is no longer able to study, and Reiko...