Ore no Imouto ga Saikou no OkazudattaOre no Imouto ga Saikou no Okazu datta: Imouto de shika Nukenai Kyoudai Jijou; 俺の妹が最高のオカズだった　妹でしか抜けないきょうだい事情; My Little Sister Is the Best Fap Material; 我的妹妹是最棒的配菜; Wǒ de mèimei shì zuì bàng de pèicài; My Little Sister Is the Best Masturbation Material; Mi hermana menor es el mejor material de masturbación

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!?