Based on the adult game by Bishop.

Yurina Suzukaze is a young lady teacher who is extremely popular with the male students at the school. But she falls into the trap of her colleague, Sakakura, who has an unusual liking for her, and for half a month, she is confined to a training room in the basement of the school, where she is trained as a meat slave.

What can a widowed woman do when she gets that itch? Invite a nubile man over to help her decorate! It has been a year since Chiho became a widow and the nights are getting lonely. It’s a good thing that her friend Kanae is there to help. Kanae is experienced, she’s been married for eight years and she knows just what Chiho needs. A little spice, a little color and some new scenery is what’s missing from Chiho’s life.

It is around the fifth century in Europe. Teodora and Helena were daughters of the royal family of Burgund. Burgund had been known as a brave country, but they were defeated by Melven, and Teodora and Helena were captured by them. Melven soldiers raped the captured Burgund women. Because Theodora didn’t want to be raped, she tried to commit suicide. However, when she heard that Helena was also captured, she made up her mind to devote herself to them in order to help her sister.

Tokyo fell into ruins following the consecutive great earthquakes of 2014. As a result, the new city center is built in the location of the former Nishitokyo. Meanwhile, Shinjuku and the submerged Minato wards devolved into slum areas. Further, due to the Immigration Laws of 2040, these slums saw an influx of refugees, mafioso, and terrorists, and is now the leading crime capital of the world.

The year is now 2049, and this is the stage in which two women embark on an operation to arrest a dangerous drug dealer.

(Source: translated and adapted from official site by Cranston)

Certain subjects being taught these days at college aren’t always on the curriculum… Sex education is one of them! Here at our all-girls school, one male teacher takes it upon himself to best educate students in the ways of carnal knowledge. Using (and abusing) his authority, he lures the hottest students into his lair and has his sleazy way with them! In the the end, these girls will learn some lessons they’ll never forget.

“Smartphones…tablets…drones… Oh my God, there’s also video streaming! The future is awesome!”