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

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.

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.

A war is being fought between the goddesses of dark and light. While the former try to steal the jewels from innocent women, leaving lifeless husks, the latter hunt the evildoers. Both types of goddesses are equipped with powers to fight, but their strongest weapons are their retractable penises—flooding the enemy with pleasure is the only sure-fire way to win.

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?

After the disappearance of her sister and finding out she had joined a suspicious enlightenment group seminar, Riko enlisted herself into the course to find her but the only way to reach the same course as her was to rank up and the only way to do so was to help others release… that being through sex.

Seika Girl’s Private Academy has a dark secret. All of the girls at this school are from prestigious families and thus have never dated… even once. So the school had to come up with a way to make sure they didn’t get too overwhelmed by their urges..

More than a hundred years after its founding, this country has now reached the peak of prosperity and decadence. As the Empress controlling this nation spends her days indulging in the pleasures of the mind, body, and soul… other nations who do not abide by these vices band together to form “The Holy Alliance” and prepare to wage war upon the Empress..