OVA produced by the manga publisher Toranoana.

Based on the game by Black Rainbow.

Murakoshi Shinta is an extraordinary student at an ordinary high school. Every student hates him, also teachers and parents hate him. His life is in despair.... One day, he receives a gift from his internet friend Mr.K. It is a hypnotic machine....

The staff members of a certain hentai producing company get personally involved in their work. Perhaps a little too involved as some some male staffers begin to cross the line between fiction and reality.

The Man-Killer Virus: a lethal disease that has eradicated 99.9% of the world's male population. Mizuhara Reito has been in cryogenic sleep for the past five years, leaving behind Tachibana Erisa, the girl of his dreams. When Reito awakens from the deep freeze, he emerges into a sex-crazed new world where he himself is the planet's most precious resource. Reito and four other male studs are given lives of luxury and one simple mission: repopulate the world by impregnating as many women as possible! All Reito wants, however, is to find his beloved Erisa who went missing three years ago. Can Reito resist temptation and find his one true love?

Based on the manga by Fuusen Club (風船クラブ)

In a dark, empty school building, Kiriko is bound and gagged, wearing only her underwear. In front of her, there are three men wearing masks. They tell her, "I want to see your body drown in pleasure, and your face contort in ecstacy." These men had much experience with other female teachers. They would continue their perverse assault until their prey cried out in ecstacy. However, Kiriko is a strong-minded, martial arts expert. Two of the men were already lying wounded in the nurse's room. As Kiriko threatens to turn the men into the police, her epithets start to excite them. They tell her that if she can stand the men playing with her pussy for ten minutes without getting wet, she can go. As they play with her body, her mind and reason dims in a wave of sexual pleasure....

Based on the game by Black Rainbow. Murakoshi Shinta appears to be just a doctor at a school, but secretly he has been taking advantage of his position to hypnotize any female student he likes. Now, after putting all of his targets under his control, he begins to turn the unfortunate girls into his sex slaves...

Based on a manga of the same name by Yuzuki N'.

Akimasa is now a high-school student living with his older sister who he obviously has feelings for "Mao-neechan". Aki's sister, for her part was pretty popular and well loved and responsible in school and is now a successful office lady, on the surface. But in reality she is much more troubled over Aki than what he will ever be over her. Can something possibly develop between the two of them?

A super-secret cult of lesbians performs erotic experiments on bodies from the local hospital! Their purpose: to revive the spirit of their ancient leader in a virile human form. Now it's up to the Midnight Strike Force, a team of busty justice fighters, to go under-cover (and under the covers) to stop the nefarious acolytes before they succeed in their diabolically dirty schemes!

Based on a game by Love Juice/Lilim Nama.

This series is about a couple of wives that have been given to a loan company in repayment of the debt, to perform various sexual acts, that their husbands couldn't repay.

Yuuki Orie has been lured into Shimizu Keisuke's house. She is flabbergasted at the site of his mother's orgy. Izumi Remi, who has been suspicious of her master, Keisuke, finds out about his relationship with Orie through her friend, Korin. Full of jealousy, she not only goes after Orie, but also involves Korin! Can you keep your eyes on the action!?

Despite being young, she got a job at a long-established department store, she was also a successful student, but...

"Sexual harassment, power dynamics, these people are the worst!"

100 million years ago, an ecological disaster drove the Demon Beasts from our world. Now they must breed with human females to create a new, hybrid creature who will clear the way for an invading horde. When 19-year-old Kayo is raped by a possessed lover, it's up to 19-year-old Interplanetary Mutual Observation Agent Muneto to save her from the terrifying creature to which she gives birth: A mutant, lust-driven Demon Beast!

Teen-aged (and well endowed) school girls getting raped - by their teachers (the first episode), by some businessmen who mistake the girl for a hooker (the second episode), by a classmate in mad love with the girl (third episode) and finally two sisters being raped by the school janitor.

No friends, daily beatings by bullies and even his parents have given up on Ryouichi. However, his life changes one day when a new girl transfers into his class. Chihiro is an old childhood friend, and she remembers Ryouichi. She is unaware that he has suffered brain damage from an injury he suffered while they were playing as children. Riddled with guilt, she offers to do anything for him. Taking advantage of the situation, Ryouichi demands sex from her. Her conscience does not allow Chihiro to back out, and she agrees. Ryouichi quickly learns that he is infallible in bed, that he has a secret weapon. After years of abuse at the hands of his classmates, he only has one purpose... Revenge. He sets out on a carnal, perverse journey to turn all the women that disdained him into his personal sex slaves...

Overthrowing Maina as the rightful masochist slave to Souta, Shino is faithfully serving her Master today as well. Maina watches on as Shino one ups her with her soft and gentle service. Shino as her enemy makes Maina unable to practice her motto of being always perfect and had no choice but to pull back, which is causing a bad reputation for the campaign. Faced with the downfall of the person she always admired, Shino calls out the President. “You’re pitiful,” she says as she looks at her former idol in scorn.

Based on erotic manga by Yabitsu Hiro. A dude has recently moved into an apartment complex with his pregnant wife, when he accidentally stumbles upon an orgy going on in one of the rooms. He decides to get in on the action since his wife ain't been fucking him lately. He fucks one of his teenage neighbors to get things started, and ends up fucking his landlady for good measure.

Mochizuki Tomoya is a guy that lives on his own with only a day job at a convenience store keeping him afloat. While he really likes eroge, he can't draw, isn't much of a writer or composer, and doesn't know much about business. Still, his dream is to get a job at an eroge studio in hopes of creating what he loves, eroge.

Tomoya's luck takes a turn for the better when he sees a help wanted ad for the local studio Flower, and after a meeting with the company president (who to his surprise looks like an elementary school kid), manages to get a job as administrator of the company's website. Tomoya's glee at being part of the eroge industry is short-lived, as he soon learns that Flower is on the chopping block due to their first title being a massive failure.

After playing through Flower's first title, Tomoya realizes that his co-workers don't know anything about eroge, lacking the insight and understanding needed to make a good game. After some nudging from the president of Flower's parent company and some soul searching of his own, our protagonist takes it upon himself to save Flower by teaching the four girls on staff the ins and outs of what makes an eroge good. The story thus focuses on Tomoya's role as a psuedo-consultant while getting to know the four heroines of the story as the player is given an interesting look at the world of eroge development.

Shinji Yagami had always heard the rumors about female students being raped on campus - everyone did. Of course he never believed them until the day he stumbled across a website showing detailed pictures of female students being assaulted in the classrooms. Shocked to find himself turned on by what he sees, Shinji begins his descent into a world of voyeurism, S&M, and rape guided by fellow sadist Satoshi Kojima. When Shinji's childhood friend Miku Iino begins to suspect that he may be involved with the string of campus rapes, she decides to confront him. Torn between his own dark desires and the horror of his crimes, will Shinji continue to hide his secret from Miku, or will she become the next target of his vicious desires?

In Alimony Hunter we see Jun in an extremely unusual three-for-all in which not everyone is what he (or she!) seems. She also makes an appearance as a teacher in Cherry Lips (under an alias). It all comes to conclusion in Virgin Road, there perhaps a too-willing bride is having a last minute fling with her in the back room of the chapel; the groom is also not a stranger to Jun... Then in Seek, there's a manly knight who discovers the joys of bondage at the hands of a fair maiden. A Play on History, Hooligan Boy has a Samurai policewoman forced to tackle a giant walking statue, controlled by a sex-crazed megalomaniac, before it destroys Tokyo. Crimson is a bloody story of a man and his blind love slave.

The main character and "anti-hero", The Rapeman, is a high school teacher by day and dispenses his surreal brand of "justice" at night under the business "Rapeman Services", which is co-run with his uncle, a former surgeon. He uses rape as his weapon. The business' motto is "Righting wrongs through penetration".