Doggy-style

Gwen and MJ stripped down to their stalkings and MJ had gotten on all fours. She looked to Gwen behind her, raising her juicy butt. She reached back with one of her hands

Gwen didn't need to be told twice as she got on her knees, lined up the tip of her cock and pushed in. MJ's vagina always felt wonderful, slick and made specifically for her. It tasted of peaches, and it was made for milking her cum.

"Hmmyeah! Give it to me Gwen! Put a baby in me!" Cried out MJ. That bit of dirty-talk struck a primal cord in Gwen's brain and she started thrusting harder, the tip of her cock bumping up against her womb. It didn't take that long before her seed spilled inside of her.

Gwen had used her internship at Ozcorp to analyze her powers in many number of ways. In the case of her magic cum, she had learned a lot of interesting facts. On top of destroying corrupting magic, it also did a good job destroying harmful pathogens, and as far as she knew, it could cure anything. If she could find a way to replicate it in a way that didn't out her secret-identity, Gwen could create the cure for everything.

While her cum had sperm content, they were completely sterile, so she didn't have to worry about a bastard kid for every villain she had purified.

Unplanned pregnancy was a fairly common problem in Lewd York. Public bathrooms had vending machines that dispensed birth control and condoms, and a lot of tax dollars went into sex-ed, mored effective methods of birth-control, prenatal and natal care, but it wasn't 100% effective. Every once and awhile everyone got caught up in the moment. Already 15% of the female student body in Gwen and MJ's year either had a baby in their belly or have already given birth, and that number is expected to double by the time they all graduate.