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Ririshii kedo Kigaru ni Nuitekureru Ore no Nee-chan♡
凛々しいけど気軽に抜いてくれる俺のねーちゃん♡
A young man lives with his older sister, who is both strict and caring. Despite her stern demeanor, she has a secret side: she is always willing to help him relieve his stress in a very intimate way. Their relationship is a mix of daily discipline and hidden desires.
As their bond deepens, the line between sibling affection and forbidden passion blurs. The sister's dual nature—formal yet permissive—creates a tense and erotic dynamic between them, leading to increasingly intimate encounters that challenge the boundaries of their family ties.