Surprisingly Fast

Rain burst over Manhattan, and Sue Storm stood naked at the window of her bedroom, before dawn. Watching the cold water burst over the streets. There was a time when the rain with it brought old aches—a tightness in her hips she'd had seen Valeria was born, an ache in her knees that came from one too many jumps from the Fantasticar, a shoulder that felt like there was a bit of shrapnel from a Skrull spaceship still in there, years after it had been surgically removed. Even Reed's tissue regenerators hadn't been able to completely excise the cumulative strain of her injuries.

Except now, she didn't hurt at all.

A week. Two weeks. Almost two feet of inhuman cock slid in and out of her as easily as if she had been taking it for years. Sue Storm's nightly pussy-stretching sessions grew easier as her cunny stretched with inhuman ease and swiftness. Every night, it seemed, she could take the artificial Porkum prick a little deeper. Her pussy changed, the labia growing longer, darker. There were other changes, too subtle for anyone that wasn't Sue to notice—the way the stretch marks on her stomach and breasts slowly vanished. The way her skin was tighter, more color in her cheeks. Even her hair was glossier, more golden.

Something had changed in the Invisible Woman. Something more profound then her betrayal of her husband and family. Her body itself had changed—was changing.

She waited until Reed had slipped out of the lab and into bed. Slipped out of the room invisible, dressed only in a thin blue robe. Her pussy felt achingly empty. There was something wrong with her muscles. While she could grip the dildo well enough, whenever it wasn't there, she just felt so—empty.

"H.E.R.B.I.E.," she said, in the lab. "Incognito mode. I need a full medical scan."

"Affirmative," the robot said.

The next three hours of discrete scans, blood work, poking and prodding were the lowest price for infidelity. Sue Storm already prepared the lies she would tell if Reed came in and found her with a sonic probe pressed into the cleft between her legs. It was so thin, Sue couldn't even feel it.

"Initial results suggest accelerated cellular regeneration," H.E.R.B.I.E. said. "Consistent with low-level healing factor. Access files: Wolverine (Logan), Wolverine AKA X-23 (Laura Kinney), Scout AKA Honey Badger (Gabrielle Kinney)..."

"I have a healing factor?" Sue said, hands on her hips. That explained the lack of pain, the disappearing scars. But it also should have meant that her pussy would get tighter, not bigger and looser.

H.E.R.B.I.E. wasn't done.

"Genetic mutation noted. Extended exposure to mutant DNA is causing macro-scale physical changes," the robot said.

"What kind of changes?" Sue said, shaking her head.

"You are acquiring porcine mammalian traits, Mrs. Richards," H.E.R.B.I.E. translated from the technicalese. She winced at his use of her married name. "Initial changes are focused on the genitalia, the point of greatest contact, but are spreading throughout your body. Continued contact with mutant genetic material are projected to lead to changes including enhanced senses, strength, stamina, pheromonal output, weight gain, additional nipples, propensity toward multiple births, ruddier skin pigmentation, development of a tail and/or snout, elongation of ears, increased appetite, enhanced libido..."

Sue Storm blinked. A hole seemed to open up inside her being.

Porkum's toy wasn't just preparing her to take his cock. It was making her like him. A pig-woman. An Invisible Sow.

"How...how long until the changes are visible to the naked eye?" she asked.

"At current levels of exposure, approximately one week," H.E.R.B.I.E. said.