全然ヤラせてくれない彼女と喧嘩中の僕を慰めようと、彼女の妹・玲奈ちゃんが跨り甘えてきてズボンの上からでも分かるぐらいに勃起してしまうボク…。玲奈ちゃんを性的な目で見てるのが申し訳なくて謝罪するが、おかまいなしに腰を前後にコスコス小悪魔素股誘惑！「コスるだけなら浮気じゃないよん♪」罪悪感にかられながらもかわいすぎる誘惑にのっかって…。数ミリの壁（パンツ布）を言い訳にチン先グリグリ！まんこひくひく！結局素股で敏感になったヌルヌルおまんこに勃起チンポをヌルっとナマ挿入！（笑）暴走しまくり24射精ッ！！！！

I was fighting with my girlfriend because she wouldn't let me have sex with her, so her younger sister, Rena, tried to comfort me by straddling me and acting all sweet, which made me so aroused that it was noticeable even through my pants… I felt bad for looking at Rena in a sexual way and apologized, but she didn't care and started rubbing her hips back and forth, seductively rubbing her bare crotch against me! "Rubbing it isn't cheating, right?" I was filled with guilt, but I couldn't resist her adorable temptation… Using the few millimeters of wall (the fabric of her panties) as an excuse, I rubbed the tip of my dick against her! Her pussy twitched! In the end, I slid my erect dick raw into her wet pussy, which had become sensitive from the bare crotch rubbing! (LOL) I went wild and ejaculated 24 times!!!