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.
Chitose, who runs a long-established Japanese sweets shop, was forced to marry a man who assaulted her when she was a university student, but he died after allowing Chitose's body to mature. She now entrusts her shop to her manager, Aikawa, and adopts Mayumi, who used to be her bunny girl, and indulges in homosexual pleasure. One day, Chitose reunites with her ex-girlfriend, Yoshida, and plans an orgy with him, his wife, Yuri, and Mayumi's boyfriend, Junji...