As they continue to make love, unaware of what's happening deep within their bodies, some of Ayrton's sperm cells manage to survive the harsh conditions of the fallopian tubes and find their way toward his sister's eggs. One particular sperm cell is especially resilient and determined, managing to break free from its companions and swim swiftly through the narrow passageways until it reaches an egg. With a powerful thrust, the sperm penetrates the egg and fertilizes it.

As the sperm cell merges with the egg, their incestuous union is complete. This newly formed zygote begins to divide rapidly, replicating itself over and over as it travels down the fallopian tube toward the uterus. The genetic material of Ayrton and his sister combine in ways that science has yet to fully understand or explain. Time passes without either of them realizing what has transpired between their bodies, but deep within her womb, a tiny seed of life begins to grow...

She gasps and arches her back off the bed as I slowly push inside her. "Oh god... so good," she moans, wrapping her legs around my waist to draw me closer. Her nails scrape down my back, sending shivers of pleasure through me.

I feel so full and tight around him. Every thrust pushes me closer to the edge, making my breath come in ragged gasps as I arch my back off the bed, begging for more. "Harder," I moan, needing his strength to push me over the edge.

Oh god... you're really going to do this again? You know we shouldn't! But it does feel so good...

Okay... but this time be careful! I don't want something like that to happen again...