Daisuke Ichijou goes on vacation to his grandmother’s beach resort. As he arrives, he admires the beautiful beach and even more beautiful ladies on it. Soon, he decides to start having fun “his own way.” He encounters many girls who will make this vacation unforgettable, including his old friends, the playful Nao Ihara and the wealthy Mitsugu Tsukushino, who proceed to compete over him. Daisuke also meets his cousin Maya Koromogae and her clumsy friend, Momona Amamiya. There are Kanae Shinjou and Mika as well, who also happen to “get involved” with Daisuke throughout his vacation. These six girls will be responsible for making Daisuke’s vacation intense, fun, and unforgettable. As they put Daisuke in many complicated situations, he finds that they often lead to passionate erotic activities.

After his sister is gang-raped by a bunch of wealthy and powerful men, the protagonist takes revenge by going after their daughters.

Ryouichi goes to his friend Yuu’s place to play video games, like they do sometimes. It turns out that Yuu’s aunt Yui has come to visit, and she joins them. But it soon becomes clear that it’s not a video game she wants to play with Ryouichi…

Emi is a high-school girl with a very strong love for her younger step-brother. She finally decides that it is time to confess her love to him, since it is near her 18th birthday. But before the climactic moment where she can confess her love; debt collectors arrive to confiscate her father’s properties.

During the Civil War, the powerful landowner Carson had a beautiful daughter with an innocent heart. As Faye enjoys an intense sexual relationship with her friend John and her servant girl Sophia, the end of her innocent days draws near. The mysterious Lord Mark has set his eyes on her and will stop at nothing to get her.

Flower, a local game design studio, finds itself on the verge of shutting down. After its first release turned out to be a complete letdown, the studio is now struggling to make ends meet. The employees of this all-female company desperately need additional hands to help them finish a new project on time. Tomoya Mochizuki’s passion is erotic games, or “erogames.” He can neither write scenarios nor program, and his artistic skills are quite frankly terrible. However, owing to his massive experience in the field, Nene Sonono—Flower’s director—decides to hire him as a consultant. The first thing Tomoya points out is that Flower’s employees have no sexual experience; thus, their scenarios and sex scenes lack in-depth and firsthand expertise. Eager to learn and develop their professional skills, the girls embark on a crash course to grasp the essence of erogames. Under the attentive eye of Tomoya, they explore previously uncharted waters of sexual pleasure—all for the sake of the company’s survival.

Kazushi Sudou is a university student who is visited by his two childhood friends, the sisters Ayane and Kotone Shirakawa. When Ayane discovers that Kazushi not only forgot to buy her pudding but is also using her special lotion in the bath, she decides to take revenge and join Kazushi in his bath along with Kotone. Will the perverted Kazushi be able to remain indifferent to them both?

Every school has secrets, but few leave a stain that won’t wash out. In a certain school, there was once a fun club centered around magic but had turned into murder and a lust for power. Sealed and willfully forgotten, the resulting evil of that day remained chained in the school’s basement. Twelve years later, high school student Taki Minase, while inspecting the place where the incident took place, uncloaks the secret plastered in blood—a book of magic called “Black Bible.” Trying his luck with its love curses, he soon finds out the magic proves real and easily penetrates the hearts and bodies of his fellow classmates. The resulting intercourse leaves the student body very vocal, and Minase’s acts do not go unnoticed. What was at first a simple stroke of curiosity becomes much larger and harder to control. Fully swallowed by the unshackled darkness, everyone he knows becomes a victim, including his childhood friend Kurumi Imari. Torn apart, Minase finally realizes his mistakes and that he must reverse them in time if he ever hopes for him and Imari to come together.