A Step-Brother's Protection

I overheard Carolina discussing with my stepmother about being roughed up by a guy at her college. She revealed a bit of the mark on her leg to my stepmother, despite keeping it a secret from me and my father initially. Of course, I handled the situation with the guy and ensured he couldn't harm her again. However, this led to my father discovering her bruise. Luckily, my quick thinking saved the day when I improvised an excuse for her. After dealing with the guy and coming up with cover stories, my stepsister appeared grateful and... willing. It seemed like she felt indebted to me as she ached to accommodate my substantial manhood in her petite mouth and struggled to have it inside her narrow pussy. As we engaged, her excitement soared, even allowing me to delight between her breasts. Though on the verge of releasing into her, my stepsister stopped me, opting to finish in her mouth instead and savored the last droplets of my essence. I guess we are on even terms now, right?