When horny men and beautiful women cram themselves into the train for their early morning commute, all that body-to-body contact begins to take a sexual toll on the passengers. The men's casual groping quickly leads to all-out molestation. 
Shocked, the women are resistant at first. But there's no escape from a moving train. So it's not long before these reluctant ladies give in to their own perverted passions and go with the flow. Soon the whole train is alive with sexual energy as it drives and thrusts toward its dripping-wet destination.
 
(Source: Anime News Network)

Sakimi, a student, finds herself in a pinch. Having been betrayed by her previous boyfriend, she finds herself in incredible amounts of debt. She turns desperate, and seeks help from a man who runs a "gentleman's service", who confines her to a room 24/7, only allowing her out to preform her tasks." In there, she discovers Mana Fujidoh, a mysterious young girl. Sakimi seeks to break the bonds placed on her, and free her and Mana from this hellish world of sexual desires and cosplay perversions. 
Source: ANN

A tale of forbidden lust based on the popular Japanese Hentai game Mi Da Ra. 
When a young man named Yuuto bumps into a stranger on the street, he discovers a dropped VHS tape and brings it home. His sister Yumi isn't around, so he pops it in for a look. The video is a recording of Yumi tied to a chair ...and shockingly the man who tied her up turns out to be him! 
It turns out the tape is a window into the secret desires of the viewer, and Yuuto's quickly addicted! Yumi also discovers her own fantasies on the cassette, and her burning lust cannot be quelled by conventional means! Finally, when his sister's friend discovers the tape, she finds herself on her knees with Yumi and attending to Master Yuuto's every need as his personal love slave. 
(Source: AniDB)

Based on the erotic game by Active. 
Twelve years prior to it's discovery by Minase, the origins of the magic book with dark,sensuous powers is revealed. Initially owned by a female student, Takashiro, who, along with other curious students form the first magic club on campus. The club begins to use the erotic spells to carry out favors for fellow students, and vengeance. After underestimating the powers behind the book, Takashiro is taken out of the picture, as a new leader guides the club towards a darker course, one that will force school newcomer Kitami to make a dire choice.

Based on the erotic game by Active. 
Minase, a high school student, found a book of magic in an isolated room in his school. He started practicing black magic that has extreme sexual effects that benefited him and some of his friends. Intrigued, Minase got deeper and deeper into using the craft, not realizing the evils that will come forth. Eventually, the origins of the book was revealed, and so did the incident twelve years ago on the night of the Walpurgis, the night when the power of evil is at its strongest. After coming to his senses, Minase struggles to get himself out of the darkness that he had put himself into.
 
(Source: Anime News Network)

Studio Jam