Based on the erotic game by Grand Cru Bourgeois. 
 
Former Idol Utakata Ayuri threatened to be fired because the album is not sold much. Keita as her Manager tries to help her keep working in Idol world. However, Ayuri is easily desperate and attempts to commit suicide but is always thwarted by Keita. To be able to make a good song, Ayuri should have sex with Keita as usual. Can Ayuri finish the song? 
 
(Source: Nekopoi, translated)

Based on the erotic game by Grand Cru Bourgeois. 
 
The fight between angels and devils to squeeze sperm has begun again! Yes, this is the next season from Nuki Doki! Tenshi to Akuma no Sakusei Battle. In this case the war does not occur between the two angels and the devil, but there is a third party that appears the beautiful and sexy Priest Shrine. 
 
(Source: Nekopoi and Has Been Translated)

Based on the erotic game by Pachi Pachi Soft. 
 
After becoming a mathematics teacher for his sister Miu and his friend Riko, Kanata realizes that he feels more popular than he is at school. Kanata is an expert in mathematics, which makes him feel a dilemma when Riko likes him and also behind his tsundere sister who feels jealous because his brother is always looking at other girls breasts than Miu own. 
 
(Source: Nekopoi which has Been Translated)

Based on the erotic game by Pita Fetish!. 
 
To overcome his attraction for his younger sister Hana, Yuuichi Mitsui made sure to enroll at a university far away from his home. Unfortunately, being separated from her only strengthened his feelings. He continues to feel guilty for harboring illicit thoughts when suddenly, Hana shows up at his doorstep on a summer morning, looking more beautiful than ever. 
 
However, despite her physical maturity, her intellect is that of a child. Consequently, Yuuichi tries to hold back from laying a hand on his innocent sister. But it is easier said than done, especially when Hana's ignorance—combined with her innocence—makes her a woman that Yuuichi can't help but desire. 
 
(Source: MAL Rewrite)

Based on the erotic game by Clock Up. 
 
This Another Series from Hentai Eroge! H mo Game mo Kaihatsu Zanmai.
Okazaki Kazuya works at Comic Company Under the making of Ero Manga H. Since Fujita Makasaki resigned and moved to Our Company Manga Shinka, Okazaki started working alone in Comic Bottom. And at the time of opening jobs in Comics Bottom, Okazaki did not find anyone who expert in the field of Ero Manga, but he guided Ayabe Haruru to become a great Ero Mangaka. 
 
(Source: Nekopoi, translated)

Based on the erotic game by Waffle. 
 
After a string of failed jobs, Keiichi Oyamada lands work at a small manga cafe. Things seem to be looking up from day one. His best friend is his manager and he gets to work alongside the beautiful Rei Suzukawa. Also, his cute childhood friend, Kururu Hiiragi, is a regular—and she's all grown up! 
 
So why couldn't Keiichi hold down a job before? Due to a series of bizarre coincidences, he always seems to end up having sex with every single female coworker! Although he hopes to finally end this deadly cycle, Keiichi will soon find out that bad habits die hard.

Based on the erotic game by Waffle. 
 
Arahama Yuu has 5 sex-friends. One day, his easygoing sex-life reaches a precipice. One of his partners, Shimizu Misako, who is also a co-worker at his company, had been sleeping with him on the understanding that they would marry. However, he only considered her a sex-friend, and even revealed the existence of the other 4. Incensed, she has him gather the other 4 together in his apartment. 
 
Shimizu discovers that Arahama has surrounded himself in the company of many beauties of differing personalities. Besides herself, the others are: Yanagi Ryouko who runs a cafe near Arahama's apartment; Hoshino Kotori, a schoolgirl of his acquaintance; Endou Makiko, who manages a large company; and Kamishima Aina whom he met on an on-line dating site. 
 
Shimizu demands that Arahama ceases having casual relations and marries someone. However, the situation get heated and confusing until Arahama somehow ends up proposing to all of them. 
 
In the days that follow, Arahama visits each of them individually in an effort to withdraw his marriage proposal. 
 
(Source: Official Site)

Kaito left his hometown with a dream to be a big man. But he doesn't have any clear ideas, so he just lazily lives every day. It's no good. Kaito decides to work at a newly opened resort facility called "A LO HA". But he meets various girls he had relationships before there... 
(Source: ErogeShop)

Based on the erotic game by Clock Up. 
Hosaka Ippei is your average Japanese yuppie who works at a rental video shop. He has a wide collection of erotic mangas and hentai at home, all of which are of the rape genre. He is fond of rape and his lifelong dream is to actually rape a woman. 
Everyday, after his work at the video shop, he goes home through a dark park not because he wants to unwind after a long day, but to get a chance to see a woman getting raped. He stumbles upon Sari, a mysterious loli wearing unorthodox clothing. He takes this chance to rape a woman but his imagination of raping her arouses him too much and ends up ejaculating on her. As Sari wakes up, Ippei's punishment is to let her live with him. Ippei agrees and thinks that this is the perfect opportunity to get free sex. 
The next day, a girl visits the shop wher Ippei works and asks to be a member. Ippei recognizes her as his high school classmate, Yuuma Chidori. Sari tells him that she secretly has a rape fetish and encourages him to rape Yuuma. 
Yuuma asks Ippei out for a date and Ippei takes his chance to rape his high school crush and fulfill his dream of making her say "Please Rape Me!".

Based on the erotic game by Waffle. 
Sanjou Maki is the girl living next door to Sakonji Seiichi. She appears to be well-bred, gifted with both beauty and brains. However, one night, Seiichi sees her masturbating on the veranda... 
Maki easily admits that she's a dirty girl and jokingly suggests to Seiichi that she should be blackmailed into being his sex-slave.

Based on the erotic game by CLOCKUP team Anise. 
 
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.

Collaboration Works