Based on the game by Front Wing.
The daughter of the school principal has become the Disciplinary comitee president and so she decides to forbid any romantic behaviour on the school. So the Love club must hide on the basement of the school church, they objective is to study love and all romantic behaviour they can, such thing defies the Comitee president and she’ll take action but she doesn’t expect what will come in response.

Based on the adult manga by Miyabi.
A guy wins a bet against his girlfriend and now she has to do whatever he says. He wants her to dress up as a cat, film a sex tape and fuck her out in public. You know, standard stuff.

The price for falling into corruption is having her relationships go awry… She goes into a daze as she is fucked on top of a glass table… The moments of shyness make her day more colorful… The wetness isn’t just from the sudden thunderstorm… Continuing on her path, she creates waves that will cause her relationships to shake…

As a young boy, Yusuke came home to find his mother having sex with another man. His parents soon divorced after; seeing his mother’s infidelity at a young age left Yusuke with hatred for not only his mother but for all women. Now, his father has remarried but is assigned to a distant office. Yusuke decides it is time to get his revenge on women through his new stepmother…

“Anyway, I can’t finish it like this! Let’s play against me again!” The shame using the power of the event ● to manipulate the strongest female warriors in the arena at will continues. The courageous female warrior “Stella” is made aware of her weaknesses, the dark elf “Wiora” is given an extraordinary aphrodisiac, and the priest warrior “Eris” is made to work unfaithful in front of her husband. The tough women easily fall into the swamp of pleasure …!

Based on a doujin game by Orcsoft.
Takahiko goes back to his hometown together with his wife Manami. There he reunites with Ayaka – his first love who has since married his father. Despite the fact she is now his stepmother, Takahiko tries to make Ayaka his. But his father has other plans – for all of them…

Based on a game by Tanuki Soft.
Kazuma returns home after a long absence and becomes a part-time home tutor to his younger sister and a few other girls.

She’s been photographed doing something she shouldn’t have… Now she’s blackmailed into being a plaything for men.
Source: AniDB