• Book Name: Ore no Imouto ga Saikou no Okazudatta Manga
• Alternative(s): My little sister is the best masturbation material;My little sister is the best fap material
• Genre(s): Romance Incest Adaptation
• Author(s): Kazami Genichirou
• Year 2022
• Status: Ongoing Download Manga
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Summary: My very own little sister caught me masturbating to a little sister Eroge game, then my cool, calm and collected little sister suddenly decided to help me masturbate... She even made my friends masturbate, and somehow got the most beautiful girl in school involved!? Will i be able to get a girlfriend if i can only cum to my little sister!? and also... Why is she still watching me masturbate!?