You see your sister and you were glad at what she became. You were about to rape her but as you were about to pull your pants down, you instinctively stopped. She's your sister and siblings should not do this.
You zipped your pants back up but your sister was not having any of this. She pounced at you and pinned you against the floor. Her massive breast and was weighing you down.
She got her mouth and began to take your clothes off with it. You questioned how she could even do that to begin with and in just a few minutes, you we both completely naked. You tried do one last struggle before you lost your virginity to your sister but she was too strong.
You looked into the eyes of your sister and the only thing you saw was pure lust. Her eyes were blank and her pupils looked like hearts. She looked like something out of a hentai and you felt like she was changing even more but your view was being blocked.
The moment your penis entered your sister, you were in a world of pleasure. Her vagina rubbed your penis as if it was like a hand and you screamed out in pleasure. You cummed inside your sister but you didn't think twice that she'd get pregnant.
After an hour straight of fucking, your sister finally let you go. You were shameful at yourself for letting your sister do that to you. You then realised that you and her weren't wearing condoms so she might have got pregnant.