First-year Highschool boy Shin Yuki stumbles one day upon his naked childhood friend, Yukino Kurose, reenacting a sensual scene with a mannequin in an empty classroom. She is a third-year student who wants to experience first-hand scenes from the book she reads and wants Yuki to help her! Things get a bit complicated though as her favorite books are erotic literature.
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Warning, the series titled "Yuki Nee-chan no Kan-nou Gokko" may contain violence, blood or sexual content that is not appropriate for minors.