“Do you want to-“

“Yes.”

Kathleen’s eyes were full of conviction and her head full of lust. This was going to happen. She reached over and carefully grasped Violet’s new growth. Violet gasped; no one else had touched it yet, and she was slightly unprepared for the sensation.

As she stroked the cock protruding from her sister’s crotch, Kathleen’s breath picked up. She had never touched a penis before, so this experience was a completely new one. It was hot in her hand, and she could feel the veins pulsing beneath her touch. Her own pussy was soaked to the point where it was uncomfortable, so Kath slipped her other hand down her panties to play with herself. A slight groan escaped her as her fingers slid past her still-hooded clit and snuck into her vag.

Violet leaned back onto her elbows and let her sister play with herself and the cock. It was nice, Kathleen’s hand going up and down the shaft, but she felt an insistent need from something more.

“Maybe if you put your mouth on it…?”

Kathleen immediately descended on her sister’s cock, taking the head and two inches into her mouth before she gagged a little. None of her toys across the hall came close to this size, so it was no wonder that she couldn’t very much in her mouth at all.

Violet moaned aloud at her sister’s hot mouth and tongue manipulating these brand new nerve endings. Although definitely new, the sensations were welcome and turned her on even more, if that was possible. Looking at her sister’s mop of bright red hair bobbing up and down on the end of her cock, Violet was sure that she had to fuck her sister. Right here, right now.

“Kath, should we—“

Her sister disengaged from the cock with a loud suction noise. “Yes. Right now.”

Growling with anticipation, Kathleen crawled up her sister until they were nose to nose, Kathleen’s pussy poised above the head of Violet’s member, which was leaking pre-cum. Both of them were breathing hard by now, their breaths intermingled, so they did what came naturally. Kath sensuously pressed her lips against her sister’s, whos mouth opened for her tongue to explore. They wrestled tongues for a moment longer before Kath drew back and looked down.

“Ready?” she asked Violet, who nodded vigorously.

Kathleen slowly lowered herself until the head touched her vulva. She bit her lip as she worked the head inside her tunnel, and methodically sunk down onto her sister a couple of inches. She clenched her teeth and moaned, for even though she had broken her own hymen years before with her first dildo, this was the first cock to ever enter her vagina. It felt intrusive at first, but her muscles began to relax.

Violet held her breath as Kathleen’s clean-shaven vulva seemed to eat up the first three inches of her member. When Kath stopped in what looked like pain, Vi helped to support her until she could loosen up enough to take more. After a few hissed breaths, She sank down a little bit more. Violet was in heaven right now; she never imagined what the inside of a vagina would feel like wrapped around a cock from the other perspective, but here she was, experiencing it. It was a wondrous feeling, and it clouded her mind with lust.

Making eye contact with her sister below her, Kath lowered herself more and still more, her breathing hard and fast. She felt as though she was slowly being filled to the gills by this monster, but she kept going. When fully half of the cock was imbedded within her, Kath finally felt it bottom out. So, she backed off, and came back down, experimenting with depths and speed.

Both girls were riding out waves of pleasure from the stimulation, Violet with even breaths exhaled through her teeth and Kathleen with half-shut eyes and an open mouth. They established a rhythm, Kathleen using her legs to bounce up and down, Violet slowly getting the hang of thrusting with her hips. Her body wasn’t built for thrusting a cock into a pussy; as a woman, she had child-bearing hips and thighs angled to a single point beyond her feet, so she couldn’t thrust too much, especially from this angle. After a couple minutes of wet sounds and panting, Kathleen stopped to pull her shirt off, exposing her titties with hard nips. Violet grinned and slipped out of her own shirt, to her sister’s pleasure. She had been angling for a view of these bare breasts for months and months!

Kathleen looked down at the monster disappearing up into her lower abdomen. “Let’s see how much I can fit into me.”

Violet watched as Kath pressed down with her hips. A couple more inches pushed up into her, but that was all; she distinctly felt the head of the monster cock pushing up into her stomach area, which was an incredibly hot sensation, if a bit uncomfortable. Letting out her breath, Kath shrugged. It was simply too much meat to envelop.

“Let me try fucking you now.” Violet suggested.

Crawling forward was the only way to get off of the beast, so that’s what Kath did. She rolled onto her back as Violet got up and laid eyes on her sister’s pussy lips. At Kathleen’s urging, Violet edged forward, placing the slick head of her penis against her sister’s entrance. Since they were both plenty warmed up, Vi smirked and pushed forward, and with one thrust buried seven inches of cock into her sister. Kathleen’s eyes went wide as she yelped, then grinned and lightly slapped her sister.

Violet fucked the best she could with the tools given, and soon Kathleen’s short moans gave way to longer and high-pitched noises of pleasure. She’s about to cum on my dick! God that is so freaking hot.

Kath’s orgasm rose steadily. As it culminated, she slammed her feet back into the bedspread and shrieked a couple times; her eyes squeezed shut. Violet watched this happen in fascination, sweat beginning to drip down her face. She felt a roiling sensation in her balls, but before she could say a word, she felt completely overcome by a sourceless urge to empty her load inside her sister.

Increasing the speed at which she rammed into her sister’s depths, she felt hot pleasure mix in her lower abdomen. At the right moment, she pushed in as deep as she possibly could and groaned shakily a few times as she shot gob after gob of semen up into Kathleen’s guts.

Through the haze of her orgasm, Kathleen felt that last thrust, in addition to the pulsing of her sister’s cock as Violet came. Her eyes popped open when she felt the hot fluid jetting against the end of her vagina, but she was feeling far too good to let panic overcome the moment.

Violet’s orgasm seemed to go on for hours, although it was only a few seconds. As they both panted in unison, the same thought stole into their minds. Would Violet’s seed get Kathleen pregnant?

Violet was the first to speak. “I’m sorry! Kath, I’m sorry…” She pulled out of her sister’s vagina, expecting a flood of pearly cum to follow. Surprisingly, nothing came out of the steadily shrinking hole but a little queef. Violet frowned in confusion, then looked down and squeezed the head of her own shrinking genitalia, causing a single drop of semen to come out onto her finger. She had definitely shot her load into Kathleen, but even when Kath leaned forward and probed with her fingers nothing came out.

They looked at each other with mutual mixed emotion, but Kath decided it was fine. She got to her feet, came towards Violet with a sincere expression on her face, and lovingly kissed her lips again. They made out slowly, deliberately, Kath’s hands feeling up her sister’s boobs, Violet’s hand on Kath’s cheek. After a while, whey drew away from each other, Kathleen catching a corner of her lip with her teeth.

“Well that was amazing. Even if you did cum inside me.”

Violet agreed whole-heartedly. “Hey, you’re the one who wanted to fuck ME.”

Kathleen grinned, her eyes bright shards of emerald.

{Author’s note: There will be more if positively received!}

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