The story begins with a very sexually active female lead imagining all possibly risky situations that she would have or could have had with her date if he didn’t leave for the evening.

In an effort to help tutor her nephew, Saori allowed Akira into her home and gave him private lessons. However, Akira walked in on Saori when she was changing and immediately fell in love. In one of their tutoring sessions Akira could no longer supress the emotions inside of him and expressed his love for her in the most physical way he could. He had his way with her every day and as many times as he could, finishing inside of her and eventually impregnating her. What kind of mess has she gotten herself into? What will her husband and family think?!

Based on the erotic game by ClockUp.
Tetsuya’s investigation into a luxurious hotel turns over a nest of yakuza and a bizarre orgy cult. On rich silk sheets and velvet chairs, the rich and powerful participate in sex acts so depraved that just witnessing them is likely to turn a man into a monster. But the true purpose of this cult is a pact with evil energies that can literally turn Tetsuya into an inhuman demon.
Source: Anime News Network

It was the Taisho era. Mikagura Tokito was the director of a detective agency, which had solved a lot of cases. One day he disappeared, apparently involved in an accident. Tomoe, Shigeno, and Chizuru, who adored him, got anxious thinking about what had happened to him. Hearing that Shigeno’s elder brother had seen him at a church in a foreign country, they travelled there hoping to meet him again.
However, it was a dead body of a priest in a church which they found there. Furthermore, they found his arms had been cut off from his body. Because they thought his death had something to do with Tokito’s disappearance, they investigated the case. Suddenly they were attacked by men. Being involved in danger, they tried to find Tokito but will they find him?

Anna was deceived into a goblin wedding.
Last night she got a traditional pre-wedding facefuck.
Today, heavy with a bellyful of goblin spunk,
she begins the ceremony proper.
The same bastards who wrecked her throat
are in attendance, and she realizes with horror that
things are about to start all over again.
The orcs take turns between her virgin thighs, flooding her tight
hole until it pukes rancid spools of jizz.
Orc semen is an aphrodisiac that’s especially
potent to humans. Will Anna make it to her
honeymoon as a sane woman, or is she already
too far gone with sexual psychosis?
What’s clear is that the precious jewel of Anaholina
is as doomed as the kingdom she lost.

When a young man named Yuuto bumps into a stranger on the street, he discovers a dropped VHS tape and brings it home. His sister Yuumi isn’t around, so he pops it in for a look. The video is a recording of Yuumi tied to a chair… and shockingly the man who tied her up turns out to be him!
It turns out the tape is a window into the secret desires of the viewer, and Yuuto’s quickly addicted! Yuumi also discovers her own fantasies on the cassette, and her burning lust cannot be quelled by conventional means! Finally, when his sister’s friend discovers the tape, she finds herself on her knees with Yuumi and attending to Master Yuuto’s every need as his personal love slave.

Based on the game by Biscotti.
Shun is the only male teacher at Kyoukasen Girls’ School, a well-known high class school also known as the “Water School” since it is situated in a forest with a lake on the school grounds. It is a place of recovery for those who have been mentally wounded. He meets girls who have shut themselves off from the world, those who don’t have confidence in themselves, those who are still traumatised by their past. He decides to help them move forward with their lives.

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.