It’s the sultry Maria’s first day teaching at this new school. The headmaster graciously shows her to the classroom where Maria is shocked to see other faculty members engaged in a steamy orgy with students. Before she has a chance to leave, a sexy female teacher forces a powerful aphrodisiac into her mouth with a kiss, which renders Maria helpless and forced to take part in the orgy. Later that night she discovers to her surprise that the events that took place at school actually turn her on… Will she quit her new job or go back for more?

The depths of our planet hide a subterranean, magical world named Roa currently in the grip of a terrible war between the all-female knight corps of Queen Gloria and the monstrous troops of the evil syndicate Zerou.
The story starts when Metzer, a young and brilliant Zerou officer, gets official approval from Zerou’s high command to try a new plan suggested by the protagonist himself. Secretly relocated to the surface of Earth, his mission consists of gaining the trust of the Sweet Knights, the two japanese girls bestowed by Queen Gloria with the power to protect the surface world from the monsters of the syndicate. After discovering their weak points, Metzer will use his monsters to defeat, kidnap and brainwash the Sweet Knights into sex slaves devoted to Zerou’s cause.
However the syndicate do not know (yet) of Metzer’s great ambitions…

Based on the erotic game by Blue Gale.
Ayame has been acting strange of late. Apparently, that person, whom she calls Papa, has been on her mind. Burned into her mind is the scene of her Papa gripping Hyouka’s panties. Knowing full well that Papa is lonely, she stumbles upon an ingenious, if dangerous, idea: “I wonder if I can be Mom’s replacement?”.

The Blackmail: Tomorrow Never Ends
Aya believed that Yumiko was her best friend, but when Aya develops a crush on the boy Yumiko loves, Yumiko decides to exact some revenge. Compromising photos of Aya turn the innocent girl into a helpless sex slave, but Yumiko’s desire for revenge doesn’t end there. Aya’s friends and even family have to suffer as well! Yumiko and her male friends blackmail the girls into every form of depraved and humiliating situation imaginable. With friends like these, Aya will never need enemies!.

Two respected older brothers; Two beautiful, virtuous wives; and a younger brother, a horndog who salivates at the chance to taste those wives.

Ryouji has always been like a brother to his cousin, but all that changes when Ryouji witnesses his cousin’s wife masturbating one night. Unable to get the image of Kasumi’s giant boobs out of his mind, Ryouji makes it his mission to satisfy the unfulfilled woman.

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.

Anime adaptation of the PC game by Blue Gale LIGHT.
Deep in a forest, there existed an old European-style building made of brick. It was an all-girls’ school attended only by girls from good families.
One day the school was covered by a mysterious thick fog caused by an earthquake. Orc soldiers emerged from the ominous fog.
The schoolgirls were attacked one after another by these brutes from a parallel world. The girls’ resistance was futile; they were crushed by the powerful orcs. Rape and death, only tragic screams echoed through the school.
Why did it become like that!? There was no one who could answer that question…
(Source: VNDB)