Eileen slowly pulled out of Ty and their panting filled the room while his thick semen leaked from her slit. They shared a passionate kiss, and Eileen said softly, "You're so fucking perfect for breeding."
"Y-you're so fucking perfect at mating me," Ty gasped.
"Of course," Eileen grinned. "Are you OK with birthing the caboclo baby I just put in you?" Ty nodded, and he kissed her head, saying, "Such a good girl..."
Ty wished for the fertilized egg gestating inside her to develop, and it rapidly grew into an embryo. Her stomach was soon distending and swelling with a baby bump, and she felt her breasts grow heavier as they prepared to give milk.
Before she knew it, the embryo had grown to a foetus and she could distinguish its human traits. In particular, she found it weirdly satisfying to note the hints of both of their genetics that it would inherit- it appeared kinda different to its siblings.
She saw a firm, dark-skinned hand stroke her belly and her breathing quickened at Eileen's firm touch. And to her surprise, she felt the baby kicking- its foot pressed against her skin at the point Eileen was touching. "It's reaching out to its papai," Eileen whispered. For some reason Ty felt weirdly turned on in two different ways. On the one hand, she felt integral, like Eileen needed her; on the other, she felt like a vessel, something for him to fill with his semen and birth his offspring.
"It won't be the last one, either," Eileen continued. "I wanna fill you with every drop of white sperm in my balls so you get pregnant with and birth as many of my offspring as you possibly can." His desire only intensified Ty's conflicting causes for arousal, and she ached for him to do it too. His thick dark phallus rubbing at her reminded her that he had enough stamina to do it, too.
She bit her lip as she felt her water break, relieved that Eileen once again went down between her legs to help her deliver. Before she knew it, a third mixed child of theirs had been brought into the world and was suckling on its pale mother's breast. It suckled until it fell asleep, and Eileen took it off to rest while Ty wished herself back to virginal proportions.