That was quite fun - r18

Julian could say nothing as the combined sensation was too much for him. His eyes rolled back in his head, and his body tensed. His toes curled as he fought against the urge to cum immediately.

Suddenly, Julian's grip on Isabel's head tightened, and he began fucking her face with a newfound urgency. His hips moved, driving his cock deeper into her throat with each thrust. Isabel gagged, her eyes watering as she struggled to keep up with his demanding pace.

But then, Eleanor's voice broke through the moment with a hint of envy in her tone. "Brother," she whispered, her eyes still fixed on Julian's cock disappearing into Isabel's mouth, "I want you to treat me the same way."

Julian's eyes snapped open as he pulled away from Isabel. His cock was slick with her spit, and he looked down at his sister. "As you wish," he said.