There goes the neighborhood! A barbaric warrior king seizes the beautiful Queen Beatrice. As his soldiers ravage her kingdom, they introduce the city wenches to a variety of exotic sexual acts. Soon, the haughty queen and her handmaids are begging for more, and the city becomes a carnal capital of debauchery and lust!

Motoki is a junior-high student who can't ever concentrate on homework because of his sisters loud lesbian sex in the other rooms, he doesn't think life can get much worse.....until he gets a tutor and falls in love with her, from which he becomes a sex slave for her.
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(Source: Anime News Network)

Shinyusha