彼女の妹は、陽キャで超生意気。「お姉ちゃんに釣り合わない」とボクに会う度見下してくる。そんなある日、ミスコンの水着審査に備えてハイレグを着ていた彼女の妹…またもや調子にのった様子でボクをバカにしてくるので我慢の限界！こっそりハイレグに媚薬塗りこみ素股で見返し追い込みピストン！「陰キャチンポで感じるはずなぃい」無理やりむぎゅむぎゅ素股だけでおまんこびっしょり！ハイレグ水着が擦れて感度100倍！結局濡れおまんこにヌルっとナマ挿入！！焦らされたせいで即イキ！超絶怒涛の16中出し射精ッ！！

Her younger sister is outgoing and super arrogant. Every time she sees me, she looks down on me, saying I'm not good enough for my sister. Then one day, her sister was wearing a high-cut swimsuit in preparation for the swimsuit judging of a beauty pageant… and she got cocky again and made fun of me, so I reached my limit! I secretly smeared an aphrodisiac on her high-cut swimsuit and gave her a dry pounding fuck to get revenge! "Your gloomy dick can't feel anything," she said, but I squeezed her dry pounding hard and her pussy got soaking wet! The high-cut swimsuit rubbed against her, making her 100 times more sensitive! In the end, I slid my bare penis into her wet pussy!! She came instantly because I had teased her! I ejaculated 16 times inside her in an incredible torrent!!