A horny headmaster and his naughty nephews are out to train twelve teachers to be sex slaves. They’ll use any scheme in their arsenal to get the hot lady professors to share their carnal knowledge. But even if the women give their bodies over freely, that doesn’t mean they’ll just take it lying down. The extracurricular activities are nonstop in every nook and cranny of this institute of lustful learning.

Bonus section for Hachishaku 2!

So you’re visiting again I see? How about trying the Demoness Dog? She could use plenty of discipline…
And after that perhaps the former Princess of the Vampires? She has a perculiar trait that may interest you…

In the near future, the world as we know it has been spoiled by our negligence. From the stratosphere come five beautiful nymphs in the shape of angels, bearing the fragrance of forbidden fruit. It appears their desire is to bring pleasure to the devastated human race. A young programmer working late spots one of the beautiful girls on his balcony, peeping on a couple across the way. Once she departs he is surprised to find the scent of fruit lingering in the air. He knows he must pursue her, what he is yet to discover is that she’s not of this Earth!

Based on the game by Black Lilith.
Igawa Asagi is a veteran Shinobi. After defeating her archenemy a long time ago, she thought she could finally settle down. Yet, her archenemy was revived from death through a pact made with the head demon in the city and swearing to take revenge on her by hurting those who are close to her. Her boyfriend, her sister (also a Shinobi) and she herself are part of the act being abused emotionally and… sexually…

Saeko is introduced to an online sex shop by her co-worker, Sayaka. Curiosity gets the best of her and she orders herself a small vibrator. After discovering the pleasures the sex toys bring her, she gets addicted to masturbation and finds herself doing it all the time. Soon enough, Sayaka joins her in her sex escapades and things start to escalate to new heights.

Based on an adult game by Front Wing.
Otonashi Meimi is walking alone in an empty park when the demon Rococo suddenly appears. Rococo uses her Eternal Arm attack on Meimi in order to separate the power of Misty Mei from within her body.
Meanwhile, at Naoto’s house, Hikari, Naoto’s stepsister who was studying abroad, returns home. She starts going to the same school as Naoto, and it worries Rika, Naoto’s lover, a little.
“I love you the most in the world.” – With these words, Naoto makes love with Rika in the school nurse’s office. However, Misty Mei appears and spirits Rika away. Then, the angel Luvriel appears saying that Naoto has no choice but to have sex with Hikari so that a new Jibril can be born to save Rika.