どうしてもボクとエッチしたい義妹、でもそんなの絶対ダメ！カワイイけど…カワイイけど義理とはいえ兄妹なんだから！！しかしある日、ボクの弱みを握った義妹から悪魔の取引…それは『レ●プごっこ』！？自分で自分を拘束し「さぁお兄ちゃん！思いっきり犯してね！」って何言ってんの！？でも言う事を聞くしかないボクは恐る恐る義妹のほっぺをかるーく平手打ち…。しかし「何今の！もっと本気で！もっとボロボロになるまでちゃんとレ●プしてよ！」と、ドM義妹の命令にだんだんボクもエスカレート！「お兄ちゃん止めて！」と泣き叫ぶ義妹に喉奥イラマ！涙とヨダレでぐちゃぐちゃなのに「やれば出来るじゃん！」と大喜びの義妹！もっとぐちゃぐちゃに濡れちゃってる義妹マ○コを、生チ○ポで問答無用の鬼ピストン！なんだか義妹のおかげで新しい扉が開いちゃったかも…

My stepsister desperately wants to have sex with me, but that's absolutely not allowed! She's cute, but… she's cute, but even though we're stepsisters, we're still siblings!! However, one day, my stepsister, who has something on me, makes a devilish deal… it's a "**** game"!? She ties herself up and says, "Come on, big brother! **** me as hard as you can!" What is she talking about!? But I have no choice but to do as she says, so I hesitantly lightly slap my stepsister's cheek… But she says, "What was that! Be more serious! **** me properly until I'm a mess!" and I gradually escalate my actions as my masochistic stepsister commands me! I give her a deep throat blowjob as she cries out, "Stop, big brother!" Even though she's covered in tears and drool, she's overjoyed, saying, "See, you can do it!" I mercilessly piston her wet pussy with my bare cock! It seems like my sister-in-law has opened a whole new door for me…