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.

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.

Based on the erotic game by Atelier Kaguya Team Heartbeat.
Yuusa Sousuke is a special case doctor who treats perverted women with strange methods…

Aki is an Andromaid, half android, half maid. Created to infiltrate the house of Kenichi, she disguises herself as an ordinary housekeeper. Her mission is to capture a sample of Kenichi’s superior sperm, but she ends up with more than she bargained for. Will her android heart find love after comforting her sad new master?

There is a secret club that holds an auction of virgins. They are unmistakably virgins as their bodies are checked by a sadistic woman doctor. The girls are put up for auction for various reasons, for example, to clear debts, and they are forced to have sex with bidders.

Based on a game by Lune TeamBitters.
Masaharu and his fiancée Sayaka are preparing for their wedding. Masaharu’s sister Misato is taking care of the planning and preparations together with her lover Kaneko Ryuuji whom they have known since college. Everything seems to be going fine, however Ryuji takes an interest in Sayaka after seeing her in her wedding dress. When Masaharu is busy and unable to attend one of their meetings due to work Ryuji takes advantage of his absence and begins to make Sayaka his…

Sanae is the wife that anyone would be jealous of. She is young, very sexy and gentle.
However, after 4 years of marriage, her husband worries if is he good enough for his wife. For a long time he is not able to have a sex with Sanae, but she never complained about it. He starts to think of way to make his dear wife happy and finally asks for his friend to have a sex with his wife. While he’s secretly watching his wife with other man, he starts to feel incredibly stimulated…

Imouto to Sono Yuujin ga Ero Sugite Ore no Kokan ga Yabai
After becoming a tutor for his sister Miu and her friend Riko, Kanata quickly discovers that he is much more popular than he makes himself out to be.