Married Woman and Homeroom Teacher(1996)

The first in a series of erotic novels written by Koto Yubuki from ‘French Shoin Bunko’. A housewife, Natsuko, is informed of her son’s accident by her son’s homeroom teacher, Shirai. However, it is Shirai’s lie, Natsuko is confined and she becomes the prey of a lewd science experiment.