Their cum forms a symbiote

Mary Jane Watson and Carlton Drake lie down on the floor, satisfied by the sex session. The scientist, reverted back to his human form, slowly pulls out his huge member out from the redhead, allowing the large goop of cum flowing out from her womanhood. Mary Jane moans again as she is stimulated.

"Damn, I guess I'm going to be pregnant. You shoot so much cum inside me." Mary Jane says, before kissing Carlton again.

"Well, that is for the betterment of humanity." Carlton answers.

Suddenly, the goop of cum jiggles and moves slightly, before darkens into a yellow and red color. It forms into a symbiote! The scientists gasp in surprise; they have witnessed a newborn symbiote!

"So, we can now deduce that sex between individuals bonded with symbiotes can reproduce more of their species! This is an astounding discovery!" Dora Skirth exclaims to the scientists next to her. "We can allow more specimens to bond with the symbiote, let them have sex and reproduce! Our progress on the project can be increased tenfold."

Carlton takes a glass jar and scoops up the yellowish symbiote. It is yet to decide who shall bond with this newborn symbiote named as "Scream".