After moving into his new apartment, art school student Tatsuhiko Kido discovers a crack in his wall. When he peeks inside, he makes eye contact with his neighbor, Emiru Ikuno, as she masturbates. He rushes next door to clear the misunderstanding and inform her of the crack, but accidentally trips and falls over her in the process. To make matters even worse, Emiru now has photographic evidence that would plainly depict Kido as a sexual offender. Kido then learns that Emiru has a voyeurism fetish, and is blackmailed into leaving the crack as is.

Unfortunately for Kido, it doesn’t stop here! Emiru is also attending the same art school that he is, and he will be seeing her far more than he would like to. Emiru and Kido are set to embark on a unique friendship with wildly erotic potential.

An elite doctor Kuwahara couldnt forget his thought toward Nanase Ren, whom he had loved in his youth. Then he changed the hospital to work one after another to look for her, and finally he met her again at the St. Cattleya Hospital. However, her attitude was remote and his love couldnt be fulfilled. To make the matter worse, he received photograph on which Ren was molested. Ren had been turned into a lewd woman by Hirasaka by the woman body experiment when she was at the St. Julianna Hospital. He was disappointed and he lost his mind. Kazama Mana who was a nurse of the gynecology and obstetrics section, loved Kuwahara, and she resembled Ren. Taking advantage of her thoughts, Kuwahara raped her and deprived her virginity shouting the name of Ren.

On a forbidden hospital ward, the head doctor performs madly erotic experiments, stripping the nursing staff of their uniforms, inhibitions and self-control… until even he is shocked by what he uncovers!

Every month, one random girl becomes a comfort station as students and staff from around the school use the comfort station for pleasure.

Shun is the only male teacher at Kyoukasen Girls’ School, a well-known high class school also known as the “Water School” since it is situated in a forest and there is a lake on the school grounds. It is a place to heal the wounds of those girls who are hurt. He meets girls who shut off themselves from the world, those who don’t have confidence in themselves, those who are still traumatized by their past. He decides to help them move forward with their lives.

After a heavy storm, Kazuma Shiraishi finds himself stranded on an uninhabited island somewhere in the Pacific. However, his situation may not be so unlucky, as 15 beautiful women are also marooned alongside him. Kazuma seizes the chance to have sex with these ladies, all while recording his raunchy deeds with three cameras he miraculously found lying on the shore.

An idol group called “Live un veil” has been formed. The members are Nagisa, Nanami and Kaede, and a tour with fans to a southern island has been announced. All TVs and magazines pick it up and a lot of fans apply for it. The main character is Ryou. One day, he receives a parcel, which includes a film, an envelope and some erotic swimsuits for girls. “What is it!?” He opens the envelope, and finds a ticket to the tour and a letter. It says, “If you take a photo using this film, their libido will become uncontrollable….” “Does this mean take a photo of the idols and make them wear these erotic swimsuits?” But he is more interested in taking part in the tour because he also applied for it. He doesn’t care if the film is fake or not. “Great! I’ll spend a happy time with them!” Like this, he participates in the tour…

Takeshi Ookubo is a student at the prestigious Seifuukan Academy, attended mostly by the rich and influential. Owing to his nasty physique and meager intellect, he has little prospect in getting the attention of, let alone developing a romantic relationship with, the woman of his dreams.

When Takeshi is on the verge of giving up, God bestows upon him hypnosis powers, which Takeshi uses to seduce the attractive girls at his school and build his own harem.

He now embarks on a perverted quest, entrapping both classmates and teachers alike under his command. The academy soon transforms into his exclusive sexual playground as more and more girls begin submitting to his influence.

Yuu Arahama has a girlfriend named Misako Shimizu. She has a great body and loves him greatly. One night, after having sexual intercourse, Misako proposes to Yuu. However, he rejects her proposal, revealing that Misako isn’t his only partner. He has four other partners: Ryouko Yanagi, Kotori Hoshino, Makiko Endou, and Aina Kamishima.

Misako makes Yuu call all four of them at once, only to find out that each girl is not aware that Yuu has sexual relationships with the others. Another problem arises when the girls decide to compete with each other so as to determine whom Yuu is going to choose as his wife. However, Yuu is reluctant to marry anyone, fearful of the possibility that he will lose his freedom when he gets married.

Now, Yuu has to go through various situations which forces him to go through sexual activities with the girls to sate their lustful desires and settle their feud.

It was Taisho Era. Morisaki Shinichiro and his little sister-in-law were managing a café that his dead mother had left. His father used to be an excellent scientist, but he began to absorb in studying “android”. People began to cast cold eyes on him, and finally, he disappeared. After that, they two were living poor lives. One day, with a loud noise, an android girl dropped breaking the ceiling of the café. Then, their peaceful life suddenly turns into slapstick.

A special governmental program has been introduced to counteract the declining birth rates of demi-human races suffering due to a lack of male members. Through a so-called “assistance system,” randomly selected humans are required to mate with designated partners—be it elves, sirens, or even dragons.

Iris Thea Eaderlindt, an elven princess known for her open-mindedness and friendly attitude towards humans, is transferred to the Ark Metropolitan Academy. Coincidentally, her new teacher has been selected as her mating partner. Anxious yet determined to fulfill her duty of securing the future of her race, she starts partaking in sexual activities with him. To her surprise, Iris discovers that her partner’s ancestors were orcs, well known for their extraordinary sexual prowess.

As more demi-human students join the class and find out about their teacher’s “side job,” it becomes increasingly difficult for Iris to keep her partner’s attention solely on her.

One day, the most popular teacher at Akakura Gakuen, Aoi-sensei, approached Wataru and informed him that his help is needed and he must take off his clothes immediately. She was an agent of the secret international defence organization Cradle and asked him to aid in the battle against the enemy “4D”. In order to defeat “4D”, he must engage in ecchi activities to gain energy and defeat the enemy with the power of love! His imouto-like osananajimi Honoka, classmate Ermalit, expressionless Mirai from the future and chibi Chitose from the past lend their help. However, they aren’t sure what to do!? And so marked the end of his peaceful single life.

Asa & Natsume are both in love with Hajime Saisho. Instead of fighting over him, they both promised to share him equally. However, both girls have to leave him by the end of the summer. As the summer days go by, they each spend their precious time with Hajime, while the day of their fated departure draws near.

While his dad will be away on a business trip, Touya will be taken care of by 4 beautiful tutors during the summer.

Riku Ohmi can fool every girl some of the time, he can fool some girls all of the time, and he can fool all the girls into his bed at the same time. Riku was asked to help with the girl’s swim team’s summer training when he finds some dirty videos of the girls, Yoshino, Nagisa, and Matsuri. Not content to stick with the videos, he uses them as a leverage to score some real action.

Chihaya & friends come to the beach for summer camp. There they meet their classmate Nami Minami. She likes Natsuki, but doesn’t have the courage to talk to him. As the darkness inside Nami grows, she finds an old mansion where the “Netherworld Tree” awaits her. It was the start of the incident that would rock the boat?