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Onee-chan ni Makasenasai!
お姉ちゃんに任せなさい!
A curious little brother asks his virgin older sister for advice on how to have sex. The sister, despite her lack of experience, decides to take on the role of teacher and guide her younger sibling through the subject. What starts as an innocent inquiry quickly turns into an intimate and awkward situation between the two siblings.
As the sister attempts to explain the mechanics of sex, her own inexperience becomes apparent, leading to a series of embarrassing and revealing moments. The boundaries of their sibling relationship are tested as they navigate this delicate topic together, blurring the lines between education and personal exploration.
