They wake up in a white room remembering nothing The protagonist Takato Keisuke and 6 others are locked up in these hidden white rooms. His childhood friend Hokari Kanae, classmate Ando Miyako, underclassmate Mikaba Rika, English teacher Aoi Natsuki, same year Byakuya Rinne, and classmate Manaka Nemu. While still confused about their unusual situation, a “mystery voice” suddenly speaks to them: “A game has now started. In order to escape the room, Keisuke is the “unlocker” and one heroine the “keyhole”. With an assigned act, he must “use the key”.

Mizuho can’t believe his ears when Grandpa’s will is read out. Grandpa’s final wish is for Mizuho to attend the same academy as Mizuho’s mother. The catch is it’s an all-girls school. With the help of friend Mariya however, he gets a makeover good enough to fool everyone at the academy.

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.

Teacher Nano Saikawa hasn’t given much thought to marriage, but her father’s friend wants her to have a marriage interview with his son, Souichirou Takamiya. After the interview, they spend the day together. As they gradually become more comfortable with one another, Souichirou asks for her hand in marriage. Things quickly heat up between them, and the two wind up in bed together. However, when she removes his glasses, she discovers he is not Souichirou; he is actually one of her problem students, Souji Kuga! Souji’s explanation is watertight: when he realized his brother was to be Nano’s intended, Souji posed as him in order to be with her. And what’s more, he is even confident that his family will approve of their marriage. However, an illicit relationship with a student is the last thing Nano wants. But will she be able to resist his charms, especially when her body begins to ache for his?

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.

A middle-aged man who has lost his job and home because of his arrogant nature. Leading a vagrant lifestyle, he became embittered and aggressive towards society. One day he meets a mysterious beauty Shima Itski, who invites him to become the founder of the sex cult “Ishin No Kai” and in addition to this, she offers him a huge amount of money, a house, and a car. Of course, our hero just could not refuse the sultry beauty and now he has become the “Lord” of a mad sex cult with unimaginably depraved rituals…

A couple in love, thinking about marriage, have a tough decision ahead of them. They might have to move in with Tomoya’s father. However that isn’t even the start of the problem, upon showing up at his father’s house, Kanako realizes that not only does she know his father… but she has slept with him… multiple times.

Our protagonist confessed to a girl he met at his part-time job, but the girl didn’t intend to answer his feelings and letting mc drown into sadness. After realized that he got rejected, he spends his day throwing money for alcohol. Suddenly he heard a girl voice in his dimly lighted bedroom. When he opens his eyes… a succubus was there. The succubus has been watching him every night in his dream to consume his sadness of broken heart. But the succubus realized something, consuming one’s sadness through dreams is pleasing..but “consuming” them through their reality is much more pleasurable, hence she decided to show herself up from now instead of possesing their dream.