Step-Brother Can't Wait Any Longer...

My stepsister just won't cover up while at home! She always parades around in a tank top and panties, and our folks are always scolding her for being too revealing. I also urge her to dress more modestly. I warn her that something bad might occur if she continues to flaunt herself.
Despite her being my stepsister, as a man, I can only resist temptation for so long before I give in to my primal desires! So, when I came home early from school today and found my stepsis doing laundry in her undergarments (knowing no one would be home for a while), I decided enough was enough. I took matters into my own hands! I sneaked up behind her, covered her mouth before she could protest, and slowly pulled down her panties to reveal her bare, tempting backside. Though she initially resisted, the wetness between her legs betrayed her real desire for her stepbrother's advances.
It was time to claim what I deemed mine and penetrate my stepsister's eager pussy. As I thrust inside her, the tightness of her walls gripped me, pushing me closer to the edge. I felt my climax building, ready to release a torrent of desire into her awaiting body.
Finally, I couldn't hold back any longer and spilled my essence deep within her. It was an irresistible temptation I simply had to succumb to.