Motoki, a typical college student is trying to study, but can&#039;t focus because his sister is having Loud Lesbian Sex with her girlfriend. Motoki thinks life couldn&#039;t possibly get worse ... and then he becomes the barely teenage sex toy for the rest of the cast. Sucks to be you, Motoki.

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)