Based on the adult game by Bishop.

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.

Tatsuya excelled at all sports during his school years. Now instead of being an athlete, he trains to be a coach at his former teacher’s school Academy Josho. However, the leader of the swimming club Katsumi tried to seduce him in order to improve her results by any means. He opposed her actions, but could it be that the elite players from other clubs also have the same plan!?

Honami’s husband, an older man named Satoshi, died in their honeymoon. Honami’s dream for a happy family with him is crushed but that’s not all the trouble she has to face. Satoshi’s sister, Kayoko, sees Honami as responsible for his death and believes that she killed him so she can inherit his fortune. Now she plans on taking revenge and driving Honami away. Manabu, who was raised by Kayoko now finds himself pushed to help her on her revenge but Honami is still dedicated on fulfilling Satoshi’s family dream with what is left from his family even if she has to take Kayoko’s hate.

Deep within a secluded village lies the Kamishiro household, a prestigious family whose women possess unmatched beauty. After being brought into the household following the death of his parents, Mamoru vows to repay the kindness of his benefactors by serving as their loyal butler. His older sister, Kotone, is raised as an heiress of the family. Showered with love by their adoptive mother Saya and stepsister Ririko, the two could not be happier with their new lives.

Yet despite its elegant reputation, the Kamishiro household hides a dark secret: to sustain its vast fortune and influence, women of the family are required to participate in a ceremonial orgy known as the “Feast.” In this erotic ritual, men from all over the village pay a bountiful sum for a chance to bed these women. When the Kamishiro head, Ikki, is threatened with exile for being unable to bear an offspring with Saya, he declares the beginning of the next Feast to appease the villagers—with Kotone as the main offering.

As the night of the ritual draws near, Mamoru must do whatever it takes to protect the chastity of his beloved sister. Although she is prepared to carry out her duty as a maiden of the household, the defiant boy will ensure that none can bring harm to whom he loves most.

Reiko is sexually frustrated because her husband is obsessed with an idol that looks like her and only says the idols name during sex. Reiko tells Hiroaki’s friend Taniguchi about this and offers to become sex friends to release all her pent up frustrations.

The main character, Seiichi, enjoys visiting remote islands and his occupation is that of a teacher.And he, no matter what he hides, owns the unmatched, but is unable to wear the unmatched every day.His days were unsatisfactory.One day, he received a “certain request” from an acquaintance, the chieftain of the island.He is transferred to a remote island called Ushihi Island, commonly known as Motherhood Island.What is this “certain request”?The woman of this island is.

My husband hasn’t touched me in months… and now I know why! My own daughter seduced him! I’ll show him how it feels…

Keiichi Hayama always dreamed about hot sex with his childhood sweetheart, but one day she transformed in his dream into a mysterious beauty with perfect breasts and a seductive eyes. The next afternoon, Keiichi came back from school to find that very same woman masturbating in his room!

His mother introduces her as Reika. Since her parents died in a car accident, Reika has been taken in by Keiichi’s family. But Keiichi knows there’s some dark truth behind this woman, and he has a hunch his prophetic dream wasn’t a dream at all.