In-Law VIII (Patreon)

Note: This is a story-prompt for Zee(mired). It is based on a plotline submitted previously by Smidgeon.

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Kathleen was flustered.

Perpetually flustered.

She continuously felt hot, disoriented, and hungry.

Hungry in more than the typical sense. Her hazy eyes drifted to Jack, who looked pleasantly lean in his swim trunks where he sat on the opposite edge of the pool as he gazed determinedly into the water.

Kathleen was in the shallow end, sitting in the cool water, deep enough that only her cleavage breached the surface, liquid lapping over her sweltering flesh.

She panted quietly. Even her submersion in the pool did not soothe her body much.

Jack had recommended this. Supposedly, water was good for relaxation, mobility, aches, pains, physicality, and various other things Kathleen had not paid much attention to.

It did feel nice, though. She felt lighter, if just for the moment. The pool was below-ground, the floor of it textured so that it had not been exceedingly difficult for Kathleen to shuffle into it. She knew that she would need help getting out. Jade was out enjoying her usual indulgences. That just left Jack.

Jack.

Kathleen found it difficult to focus on little else than her son-in-law. Which made sense, given that they were constantly around each other. As Kathleen grew bigger, she found her world growing smaller. She spent more time than ever at the house, lounging around under the burden of five overgrown babies. The hormones were potent and truly starting to overwhelm her. In her earlier pregnancies, her late husband had been on hand. But now Kathleen was alone. Except for Jack.

She knew it was wrong to lust after the man, yet it was hard to care when her head was so cloudy and her body was consumed with a perpetual heated tightness. And Jade was absent. Jade hardly seemed to care for her husband anyway.

Stop it! Kathleen chastised herself.

“Ready to get out?”

Kathleen looked up, only then noticing that Jack had approached, and was standing waist-deep in the water beside where she sat. She saw the way his gaze consistently darted to the water, where her belly was submerged, its image warped and wavering.

Kathleen nodded.

She couldn’t deny that the timing was perfect. She could feel the pressure starting to cumulate inside of her. Had she planned this? She wasn’t sure. An hour ago, she had forced down what had to have been two gallons of hot wheat cereal mixed with generous amounts of butter, sugar, and heavy cream. It had been the most fattening and indulgent of meals, and she had felt it expanding in her stomach even as she consumed it, pumping her body fuller and tighter, till it ached. Even in this state of discomfort, she had agreed to going into the pool. She had known that meant Jack seeing her and also…touching her.

“Yeah…” Kathleen managed, pulling some wet hair out of her face.

It was hard not to notice the way Jack looked at her. Often he couldn’t help staring at her swollen breasts and the growth of her belly. Every moment that she was around, his eyes would reliably stray. It was like a compulsion. And during the times that she had her growth spurts, Jack would hardly blink. He would hardly even breathe.

“Okay,” he said hoarsely. Jack ran his tongue over his bottom lip. “Let’s get you up.”

He took her hands. This would not have been sufficient in any other context, but with the weight of the water lightning her load, Kathleen was able to — with Jack’s help — heave herself onto her feet.

She was wearing nothing but a bikini. It was the only thing that could fit her in terms of swimsuits. Her huge breasts were overflowing the cups in all directions, the bikini bottom barely clinging onto her plump, round backside.

The abrupt reintroduction of gravity left Kathleen unbalanced, her torso pressing into her son-in-law. Her hand instinctively clung to the back of his neck, both their bodies wet and slippery.

Jack was breathing heavily.

“J-Jack, they’re…ohhhhhh…”

The growth spurt was on her.

Kathleen’s face reddened as the pressure surged, Jack’s hand instinctively cupping the sides of her massive, naked belly.

This was his handiwork. She was full of him.

She knew that Jack liked her growth, which just meant that she had to grow more for him. Kathleen was usually resistant, but this time she welcomed the waves of heat and pressure radiating throughout her, pulsing outwards. “Nrrggghhhhh…”

Her belly pushed and swelled, pressing harder into him. Growing bigger and wider as she whined and struggled, arching and pushing until Jack stumbled back a step. She just tried to bear it, tried to endure as her skin prickling and surged, the babies stretching her beyond capacity, skin glowing red till she felt like she would burst.

The mass quaked. Kathleen moaned, feeling dizzy. Her ass was leaning heavily on the edge of the pool, but even the cement and tile there could not offer much support.

She felt herself sinking, submerging back into the water as she gasped out puffs of air, water swallowing up a globe that objectively dwarfed her now.

Jack stood there, stunned.

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