A cross over between the two hentai RIN&times;SEN and RAN&rarr;SEM.

Urara starts working at a girls' school. She is now happy because she will get married in a few months. But one day, her fiance suddenly goes missing since his business didn't go well. Months later, Yuji, a debt collector, comes to her house, but she doesn't have enough money to pay. Yuji offers her to work at a boys' school his friend works. He also says if she works there for a month, she won't need to pay back money. She finally decides to accept his offer without knowing the fact that the school is full of evil teachers and students....<br><br>
(Source: ErogeShop)

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. <br><br>

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