A sister who can't handle her brother having his first girlfriend gets shocked by this new development. She becomes jealous of his girlfriend and tries sending messages on LINE telling her to break up or saying things like "How dare you make a girlfriend when there's already a sister like me!" But she ends up getting really turned on after accidentally inserting herself onto him while he was passed out drunk! It feels amazing despite how mad she is! **Note that the recorded contents may vary depending on the distribution method.**

大好きな兄に初めて彼女が出来た事にショックを受ける妹。妹は彼女に嫉妬し兄の携帯で勝手に彼女にLINEで『別れよう』と送ろうとしたり「私という妹がいながら彼女作るなんて！」とか言い出してマジでイカれてる！でも酔わされて寝ているうちに妹が勝手に挿入して上に跨り腰を振っていて！なのにメッチャ気持ち良くて！※ 配信方法によって収録内容が異なる場合があります。 特集 最新作やセール商品など、お得な情報満載の『SOD GROUPストア』はこちら！