When his father dies, Saionji is the least bit inclined to claim his inheritance. But his newly arrived secretary, Sannomiya Rei convinces him otherwise. He finally arrives at his ancestral home – a palatial mansion brimming with pliant maids who, he presumes, existed for the sole purpose of servicing their now deceased master…

Based on the game by Black Lilith.
Year 2054, Tokyo. Kirisawa Rei and Izumi Fuko are the capable
special agent, commonly called Mayaku Tokuso, whose task is
drug-crime investigation and to take down the drug syndicate
in Tokyo. They were a perfect pair, getting over numerous
bloodbaths together. One day, they had an information of 12
Angels, a drug syndicate that they had been searching for
years, sneaking into the most dangerous city in Tokyo,
Sinjyuku, where is rumored that their secret base is located.
But it is a clever trap set by the boss Kiryu for the revenge
on them…

Nazi Germany – 1944: As American bombers soar towards Berlin, a revolting Satanic rite takes place below – Hitler and his minions are using the monstrous Nazi Death Rape Machine to render the dimensional boundaries separating the Human World from the World of Man-Beasts and the World of Monster Demons. Dr. Munhihausen Sr.’s life work is about to come to fruition – the conjuring of the Overfiend!
Cut to modern day Tokyo – Munhihausen Jr. searches for a monster with strength enough to conquer the omnipotent Overfiend. Since legend says that he who kills the Overfiend will rule all three worlds forever, Munhihausen is determined to slay the Overfiend and assume complete control over all three dimensions. His efforts seem fruitless – until Nagumo’s cousin Takeaki, infused with Nagumo’s blood after an accident, begins to develop monstrous powers.
As Man-Beast Amano Jyaku and his sister Megumi, together with faithful accomplice Kuroko attempt to thwart Munhihausen’s evil plan, nothing seems likely to prevent Munhihausen, descendant of a race of brutal tyrants, from enslaving the world under his despicable rule!

One week after losing his wife in an accident, the father of the Makino family finds himself thinking the wrong thing about his four lovely daughters. When the rebellious Natsume gets into trouble at school, it’s time for daddy dearest to administer some discipline of the sexual variety. Soon, he’s giving the same treatment to motherlike Akira, over-achieving Haruka, and sickly Fuyu. Whether they want it or not.

Based on eroge (erotic game) Oni Chichi ~Manamusume Kyousei Hatsujou~ by Blue Gale.
Marina and Airi’s mother divorced few years ago and got remarried recently to a young man. While Marina accepts her new stepfather, Airi detests him. Little do they know that really he’s a pervert that sniffs their underwear and wants to make them his own by making a love drug that will turn Marina and Airi into a sex-hungry sluts. When Airi comes home and notices her schoolmate Sana giving him a blowjob, he sprays the drug on her. Now he will do with them whatever he pleases.

Based on the game by Lilith.
Sarah is a most terrible pirate knight who dances her way
around the galaxy empire that has been ravaged by war. In
the galaxy ruled by a number of power-hungry rival warlords,
an evil sadistic web is woven around Sarah, who is slowly
guided down to her destruction. When the silver knight Sylia
comes across the evil aristocrats who have run the gamut of
corruption in the galaxy and the slave traders of darkness,
the demonic twins, a desperate predicament is visited upon
Sarah!!

Based on a game by Bishop.
Toudou Miyuki and Sanada Eiji are teachers in the same school and lovers. They had decided that they would preserve their chastity until they are married. However, Miyuki is assaulted and loses her virginity to Takuya, Eiji’s step-brother. Furthermore, it doesn’t stop there as Takuya turns his attention on the other female teachers one after the other.

Based on the erotic game by Tinker Bell.
Three students are in a school late at night fighting supernatural enemies. As they are about to leave, they get attacked and trapped. Based off the Inyouchuu game.