Kyouko has incestuous feelings toward her son. The story slowly progresses into the son realizing his own feelings toward his mom. Later on, a friend of her son’s, Shin, blackmails her into doing whatever he wants. Slowly, she starts enjoying herself more and more. Will she break or fall for her son?

An unfortunate accident befalls Naoki Shindou and his whole class when lightning strikes the airplane they were traveling in for their overseas trip. The only ones able to survive are himself, his classmates Momoka Kiriyama and Kana Miyamura, their teacher Sanae Nakazono, and the flight attendant Asami Kakinuma. Now stranded on an island and far from rescue, it might prove to be too challenging to keep their sexual instincts at bay. [Written by MAL Rewrite]

Takumi Musashino was once an ordinary high school boy, but that changed when his body transformed into that of an alluring high school girl thanks to an experimental gene therapy treatment he received after being diagnosed with a terminal illness. She astonishes her classmates with her new body, receiving mixed reactions from them. While girls like Anri Sogahara offer her important adjustment advice, her male peers begin to see her as an object of their desires… Although Takumi is both confused and nervous about her new being and appearance, she will soon discover the wonderful pleasures of being a young, adolescent woman. [Written by MAL Rewrite]

Takumi just cannot stop fantasizing about Saki-senpai, her voluptuous body just stands out anywhere. One day she talks to him on the train and they become friends. Whenever he can, Takumi stares at her form, always getting a hard-on. The next day he finds out they have the same fetish… and so the story begins. (Source: AniDB)

In a certain normal Japanese high school, there are two peculiar students: a lonesome boy and Shiiba, a mysterious girl. Neither of them have many friends; but unlike the dull and boring boy, Shiiba is beautiful and considered to be in a vastly different league to the other males in school. Therefore, no one has had the courage to ask her out. Nonetheless, it comes as a pleasant surprise to the plain boy when Shiiba invites him to an empty room. Elsewhere in the world, a certain teenager has just returned home from a long day at school. As he approaches his room, however, he hears sounds from a porn video he had once watched. Startled, he charges into his room and finds his younger step-sister, Miku, watching the tapes. It is no surprise to her that teenage boys are interested in these things, but what she does not expect is that she would take an interest in it herself… [Written by MAL Rewrite]