Yuuta Yamano and Shinomiya Natsuha are dating. But it seems that he has no idea that she is hiding a secret relationship that gives her more satisfaction than dating him.

Secret Obsessions 1: Daylight, Part A When Mine forgets to lock the door to his home, his friend Ayano slips in and forces him to go outside. As a result, he is obliged to help Ayano water her family’s cabbage fields. But when he accidentally splashes Ayano with his hose, the water reveals everything beneath her thin blouse. Secret Obsessions 1: Daylight, Part B At the Motion Picture Research Society, there is an ongoing competition to determine which film will feature Yuzumon, a woman that is currently the talk of the campus. While viewed as a pure angel, she is certainly far from it. Matsuyama is well-acquainted with her bad attitude, but when he discovers her secret pastime in the club room, he decides to lend her more than a hand. Secret Obsessions 2: Nightfall Part A Tanabe dreams of a romantic summer by the beach. As it happens though, Tanabe cannot swim. While trying to learn with the help of his beautiful instructor, he ends up taking things too far and drowns. Luckily, she links her lips to his in order to resuscitate him, bringing the two ever closer. Secret Obsessions 2: Nightfall Part B The Japanese Confectionery, named Tamano-dou, has been owned by Juuzou’s ancestors for generations. But because of Juuzou’s scary face, his business has not been going well. However, after Tae and Erena joined his staff to avoid starvation, business has improved. As thanks for saving their lives, the two aim to repay this hunk of a man in their own special way.

You wouldn’t think that a hospital would be the setting for a series of erotic adventures, but when a new crop of nurses’ aides reports for duty, they’re confronted by an erotic lesson plan that pushes them to the brink of ecstasy… and sanity.

A lone tutor in a mansion in the mountains, with only beautiful women surrounding him… there’s only really one possible outcome.

Marina and Airi’s mother has left her husband, only to marry a younger man, Kouzou Akizuki. While Marina has accepted their new stepfather, Airi hates him for breaking their family. Furthermore, she soon finds out he is a sexual deviant, sniffing his underaged stepdaughters’ underwear and secretly desiring to take their virginity. Their mother is often absent from home, allowing Kouzou to pursue his carnal pleasures to his heart’s content. Unable to resist the beauty of adolescent girls’ bodies, Akizuki prepares a powerful aphrodisiac and uses it on Airi. Intoxicated with the drug, she can no longer control herself and gives in to her stepfather’s perverted demands. She soon discovers the merits of this new relationship and plunges headlong into a whirlpool of sexual degeneracy. Satisfied with the drug’s irresistible effect, Kouzou proceeds to utilize it further, coercing various girls to quench his thirst in the most embarrassing ways.

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.

He’s just a random loser otaku… why did his thing have to feel so… GOOD!? Kageura, an otaku with glasses, is tricked into joining a group of gyaru at a physical education warehouse. One of them, Yui, decides to play a game with him, but she loses. She then decides to deprive him of his virginity in front of everyone. Thus, since this incident Yui constantly feels a strong excitement deep inside her.

Kaho and Kasumi are sisters indebted to the yakuza. A student learns of their predicament and decides to pay off their debt for a certain price; they must become his sex slaves until he sees that their debt is clear.