James is going to put his newfound strength to use.

While James' cock still twitched deep inside of her, Lily pushed herself up, twisting her hips slightly on her brother's throbbing shaft.

"Hngaah!" James upper body convulsed as a spurt of pre shot out of his member. It was way too sensitive for this.

"Nnhoooh..." Judging by the violent shudder running through his sister, James wasn't the only one who was very sensitive down below.

They wasted a precious few minutes to calm down, but soon, their lust was at manageable levels again.

"Okay. Okay. That... felt incredible, but we really shouldn't do this again until we're done," Lily gasped, body still shivering with arousal. "We need to do this at the same time. On three... one, two--"

"Three!" They shouted in unison, James righting himself into a kneeling position with Lily sitting on his lap. Once again, the sensations almost overwhelmed the pair, but after half a minute, they had calmed down enough to continue.

"That... haahnn... that's a start," Lily groaned, barely holding on if her panting and the way she slumped against her brother's body were anything to go by. Not that James was faring much better; the way Lily's back pressed into his rock hard nipples, the soft fabric of her shirt dragging over James' six buzzing pleasure nubs with her every breath, and of course her squelching pussy quivering and twitching around his trembling pole was nearly enough to wash away all restraint. It would be so easy to just let go and begin railing Lily all over again...

"Nhaaa, nooo! Shtooop!" Lily wailed, slurring her words in the face of her mounting arousal - James hadn't even noticed that his hips had begun to buck into his step-sister's snatch as if they possessed a mind of their own. He immediately halted their jerky movement, even if it cost him a considerqble amount of willpower, and the step-siblings both panted hotly as their arousal slowly lessened.

"We... we really don't have time for this..." Lily gasped, regret and lust mixing in her voice. "You have to--mmfh... get up and carry me downstairs. Grab my knees, I'll hold on to your arms."

"S-sorry, your pussy just feels... aahnn, way too good," James replied, unable to keep from moaning as Lily's sweltering silkiness massaged his rod. Grabbing his step-sister's legs at the knees, James was surprised to find out that he was able to support her full body weight with only his arms (and cock, technically). Those muscles weren't just for show, it seemed! But this new position posed a new problem: Lily's pelvis shifted, her hips dragged forwards by her legs, and consequently the pull on James' member, still jammed tightly into his step-sister's cunt, increased considerably, pre pooling into Lily's insides with every throbbing lurch.

"Oh fuck, oh fuck, oh fuck, you're stretching my pussy out!" Lily rambled breathlessly, her legs twitching and spasming in James' grip. Her brother, meanwhile, grit his teeth and breathed very shallow, trying to ward off the onslaught of lust. He had to hold out, keep himself from fucking his sister, or their mother wouldn't just find a mess in the kitchen, but also her son knot-deep inside her daughter.

The thought filled James with dread, dampening the fire of his lust enough to begin struggling to his feet. Every move, every shifting muscle made Lily squeal as her brother's cock stirred up her drooling cunt, James himself growling as he fought against the building lust. But finally, he was standing, his trembling, near-orgasmic step-sister in his arms, pointed dog-dick drooling pre into her twitching passage.

"Oh god, Lily, I don't think I can--"

"Yoo haff toooh," Lily moaned, her words barely understandable as her head lolled back against James' shoulder. "Ah--Ah'll ba--ah! Bear it. We neeed to get downshtairsh!"

The first step was enough to make James doubt their ability to make it. When he set down his foot, Lily's body dropped a few fractions of an inch - enough to make her pussy slide along his cock ever so slightly, setting off a new round of gasping and panting from his sister and himself. With every step, he'd be slowly fucking Lily, driving her down on his fat prick ever so slightly, and what came when he lifted his foot was almost worse. The pull on his twitching cock increased, and Lily's quivering snatch desperately sucked him back in, her folds clinging tightly to his length. The movement of Lily's upper body also rubbed along the two rows of throbbing nipples on her brother's torso, adding to his orgiastic torment. The flow of James' pre intensified, and by the fifth step it was gushing out of his pointed tip in spurts.

A distant part of James mind was amazed that he hadn't cum yet, the sensations racing through him eclipsing even those of their frenzied rutting earlier. But the far larger part was focusing on keeping his lust at bay, teeth clenched tightly in an effort to hold on. They were both panting uncontrollably, Lily's hot breath washing over the side of James' face from were her head lay against his shoulder, cheek resting against cheek.

It became the longest walk of his life. With every step, the pair gasped and moaned, their arousal slowly, torturously increasing, but neither James nor Lily crested that sensual hill, both fighting a losing battle against their mounting lust. But they didn't have to win, only delay it, deny their instincts screaming for release long enough to clean the kitchen. James felt like his cock was about to explode, but his balls just churned and twitched uselessly, struggling to provide the sticky seed his step-sister's pussy relentlessly tried to milk out of him. He dimly realized that two incredible climaxes in short succession had apparently overworked his balls, his refractory period preventing him from cumming - yet his dog dick remained terribly, achingly hard, refusing to go down as it was wrapped in the vice-like grip of Lily's pussy.

"Can you--ahgnnhh... hold on?" James asked as they reached the stairs, a particularly strong spasm from Lily's cunt squeezing his cock tightly with the last step. "We need to... mmnnnh... get downstairs..."

"Yeeeshhh," his step-sister groaned, her hands gripping James' wrists so tightly the knuckles turned white."Jusht... keep walkiiing!"

One step down the stairs was enough for James to realize that the worst was yet to come. The **** driving Lily down onto his pointed monster was much stronger, the tapered glans poking into the entrance to his step-sister's womb every time James' foot slapped onto tje wooden stairs, eliciting sharp, moaning gasps from Lily. James bit his lower lip, hoping the pain would counteract the feeling of Lily's slick walls sliding over his trembling cock, squeezing his swollen knot, and managed a few more steps on shaky legs, almost reaching the downstairs hallway. But with three steps left, it finally happened.

"Oh fuck, yesh! Bounsh me on your fat cock, shtretch me out, fill me up, fuck me!" Lily finally had lost control, gyrating and shaking her hips around her step-brother's pre-spurting pole, screaming out her pleasure. James grit his teeth and groaned loudly, knees buckling in the face of the intensified ****.

"Lily, no! Sto-oooohnnn... Stop! We can't... we need to... fuuuck!" James pleaded, trying to stop Lily's movements with his arms. He was barely able to think straight, and his willpower was quickly diminishing.

But the desperation in his voice had pierced the lust clouding his step-sister's mind, and Lily slammed her ass down on James' cock one last time, tears of frustration trickling down her face.

"I want to... cum sho bad... I have to..." she whined, tongue lolling out of her mouth as she went slack, leaning into James' chest. "Pleeaaashe, I'm sho cloooshe!"

"We can't..." Regret was clear in James' voice as he took a step, making Lily gasp in pleasure. "We need..." Step. Gasp. "To clean up..." Step. Gasp. "My mess." Step.

"Nhooohoho, yesh, oh gaawwd, oh fuck!"

It was too late for Lily. Her whole body shook and convulsed as she climaxed violently, tail wagging wildly against James's stomach, her pussy clamping down on her brother's cock as girlcum spattered on the floorboards and a string of barely coherent curses and squeals echoed through the house. James jaw hung slack as he fought to keep standing, his unbearably hard cock giving a mighty lurch that **** a squeal out of Lily as it churned her insides. Her brother's swollen, overworked nuts twitched and throbbed, trying to provide something, anything to shoot into Lily, but the next batch of baby batter was simply not ready, leaving James just on the cusp of orgasm. The gasping dog morph mustered every last shred of will to fight off the lust threatening to overwhelm him; James knew that, if he just gave in, he and Lily would not be able to stop until they collapsed with exhaustion. Not even their mother's arrival would keep James from rutting into his mate until he had milked his balls bone dry, filling Lily with a litter of puppies...

"Oh fuck, oh fuck, I'm sorry, I'm sorry," Lily babbled as she rode out her orgasm, her fingers gripping James' wrists hard enough to leave bruises. Her brother was almost thankful for the pain, as it helped him combat the overpowering desire to just abandon all reason and breed Lily right there. James could swear he felt his nuts swell with seed, but he still wasn't cumming, the wave of lust diminishing just before it could crest as Lily finally calmed down enough to be able to speak again.

"That wash... I nevah came that haaard befooore..." she slurred, face nuzzling into James' neck, her body now limp in her brother's arms.

"I'll... I'll keep walki--nngh!" James replied, already taking the first step. His cock felt overly sensitive, the sweltering heat of his step-sister's pussy enough to melt it. But he had to bear it, endure it until the kitchen was clean, so the dog morph soldiered on, gritting his teeth against the pleasure.

The arduous walk was much the same as before, but with the added bonus of hearing Lily whimper with every step when James' throbbing, tingling cock slid over her overly sensitive folds and tugged at her reddened labia. It was only a few steps until they reached the kitchen, but it felt like an eternity to James, his mind clouded by a pink haze of lust. 'Don't cum. Don't cum. Don't cum.' Like a mantra, he repeated the thought, tiny beads of sweat forming on his face, until finally, they had reached the mound of discarded plastic wrappers in front of the fridge.

"We... we made it!" James gasped, a sound born half from arousal and half from excitement, his eyes brimming with tears of happiness. He had actually managed to carry his sister downstairs without giving in to lust, and his arms were barely tired! "We made it to the kitchen!"

"Half... halfway there," Lily breathed, letting go of her step-brother's wrists. "But we're running out of time."

A quick glance at the clock hanging from the wall revealed that they had spent more than half of the time they had just walking to the kitchen - a distance they could normally cover in at most 30 seconds. James stomach dropped, dousing his lust once more; but considering what Lily continued with, that was for the best.

"Al... Alright, let go of my legs and bend me forwards like when you were fucking me."

The memory made James cock lurch wildly, his knot expanding just a bit more, stretching Lily's cunt and eliciting a surprised gasp from her, but James did as he was told. Letting go of one of Lily's knees, he wrapped the freed arm around her waist, the leg falling down limply to dangle just above the tiled floor, the toes brushing over it. James then dropped the other knee, grabbed the front of his sister's upper body and lowered it forwards, Lily squeaking and protesting loudly as her step-brother's palm pressed into her pert tit, the rock hard nipple digging into James' hand.

"Nooo, don't grab me there!" The blonde was clearly enjoying this, hanging suspended in front if her brother and speared on his enormous, girthy cock, and that was exactly the issue. Her pussy convulsed and spasmed, wringing James' cock with its strong muscles. But he couldn't change his grip without dropping Lily, who would then drag him down as well, and then they'd end up on the floor fucking their brains out.

Lily seemed to realize this, too, and began to gather up the strewn about plastic with trembling hands. Luckily, she managed to fit all of it into her hands, even though James had emptied the entire fridge of meat. The siblings breathed a sign of relief, and James began walking towards the trash cans under the sink. With each step, Lily's hanging body bent his cock up and down as it moved, but the stimulation paled compared to before. Soon, they had gotten rid of the trash and James pulled his sister back up against his body and grabbed her knees, both he and Lily taking a precious minute to get used to the returning pulling sensation in their nethers.

"W-we actually pulled it off..." Lily whispered, her head leaning against James' again. Both were still breathing ragged with arousal, but relief flooded them as well. There were no noticeable stains on the tiles, so all that was left was...

"Oh god. I... I see her car coming. She 's back early today!"

James felt the blood drain from his face. Looking out of the kitchen window, he saw their mother's car pull into the driveway, just as Lily had said. And that meant they had two or three minutes to get back upstairs before they were caught, James balls deep inside his step-sister.

"You... you need to run. Into my room. We don't have any other option. Can you take it?"

"I'll have to. Hold on." James replied, jaw set tight. Even if he came, he would keep running, the dog morph swore to himself.

James set off with an awkward gait, the weight of his sister and his changed hip structure throwing him off balance, tail bobbing behind him. Lily gasped and squealed with every step, her brother's knotted cock hammering into her snatch much more quickly on the way back, the movements violent enough to **** open her cervix against the **** of James' pointed tip. James felt pre gush from it with every step as Lily's slick folds slid along his length rapidly, his breathing growing deeper from both exertion and mounting arousal.