Tenebrous Wolf

The real challenge came whenever Klaus tried to pull out.

Each time he attempted to withdraw, an almost unnatural suction force resisted him, pulling him right back in. It was as if her body refused to let go, clamping down with a grip that bordered on possessive.

At one point, he tried to pull out with force, only for the overwhelming resistance to drag him back in, slamming him even deeper into Briar's backdoor.

This was the true power of a Noble Demoness!

As I thought, she's really a demon noble-grade succubus! At this rate, I would be defeated before I could even tame her using the contract.

Was this the strategy of the demoness?

Of course, this was a misunderstanding. Briar had no way of consciously fighting him; the resistance he felt was purely instinctive.

In fact, she could barely form coherent sentences as his thick member rubbed against and stretched the limits of her bowels. His strong, steady thrusts drove half his cock deep inside her, but the most captivating sight, at least for Klaus, was her huge ass cheeks jiggling and wobbling with unrestricted lust.

The flushed bat-like succubus felt her bottom shaking and her buttocks spreading with each thrust of his girth.

He pounded quickly and strongly, eager to continue, but as he began to withdraw, Briar's bowels clenched, slowing his movements as if unconsciously unwilling to let him leave her tight grip.

Not enough. Perhaps I should be more serious.

Klaus released her meaty ass cheeks to grip her hips, adjusting his position on the bed. Leaning slightly over her broad rear, he put more force into his next thrust.

He pushed in with all his might, finally managing to insert his entire huge member into Briar's tight, warm bowels!

She let out a loud moan, audible even in their secluded location.

Her back arched, and her tongue lolled out of her mouth. That thick thing between his legs reached the deepest part of her backdoor; Briar couldn't see it but undoubtedly felt a bulge forming slightly on her flat belly.

Her ass cheeks spread even wider than before, his hips pressing against her bottom and resting there for a moment. Almost as pleasurable as the deep anal penetration was the sensation of his large testicles slapping against her covered, yet soaked, vulva.

Oh god… how could he go so deep? she thought.

Following that line of thought, she felt another strong impact on her butt, causing it to jiggle and, at the same time, snapping her out of her reverie.

"Hey! D-didn't I tell you to s-stop doing that?!"

Briar turned to glare at Klaus, only to be met with that smug, knowing smile. It was as if he was silently declaring that he had already uncovered her weakness.

He had clearly noticed how her bat-wings had started flapping softly the moment he drove himself inside her. But after that last slap, they fluttered wildly, betraying just how much she was actually enjoying it.

To prove his point, he brought his hand down on her ass once more, and the smack echoed through the room.

"Ahhn—!" Briar moaned loudly before she could stop herself.

She barely had time to recover before Klaus doubled down and pounded her even harder than before.

With great enthusiasm, his hips slammed against her plump backside with enough force to shake the entire bed as if threatening to break it under their rough, feverish session.

While keeping a firm grip on her waist, he didn't let up on her ass, his free hand delivering rhythmic slaps that sent waves of pleasure through her body.

Briar's tongue lolled out once again as her moans synced perfectly with the relentless pounding of his pelvis, and her body responded instinctively to every powerful movement.

"Yah… Ah, so intense..."

Briar truly felt like her mind was on the verge of going blank.

Klaus's pounding was merciless, each thrust sending shockwaves through her body. His balls swung back and forth, smacking against her dripping cunt, their contact adding another sinful sound to the chorus of skin slapping against skin. His sack grew slick with her arousal, the wetness spreading to his inner thighs and crotch as her fluids splashed from the rough treatment.

At first, she had complained. Then, she had reluctantly accepted it. Now, she was completely lost in pleasure.

Her massive rear clenched around him instinctively, as if unwilling to let go. But Klaus didn't slow down, instead, he increased his pace and force, making sure to bury himself completely with every selfish thrust.

At the same time, he felt a familiar pressure building deep in his pelvis, it was a clear sign that he was reaching his limit.

She's at her limit… and so am I... I need to finish this now.

With that thought, Klaus abruptly halted his frenzied thrusting and grabbed Briar by the waist before dragging her back, toward the edge of the bed.

Briar looked confused, he had stopped the relentless pounding she had come to savor so much. But before she could process the sudden change, his cock shifted inside her, rubbing against every sensitive spot in her bowels, sending jolts of pleasure through her body.

And that wasn't all.

Wanting a firmer grip, and perhaps just to amuse himself, Klaus adjusted his stance, pressing one knee onto the bed while keeping his other foot planted firmly on the floor.

His hands raised and gripped Briar's waist tightly, ensuring she had no room to escape what came next.

Certainly, it was a totally embarrassing position for the succubus!

"This position...! What are you doing? How much more must you humiliate me on the same day?!"

"Relax, would ya? I learnt this from somewhere. It should make everything easier."

Without waiting for a response, he drew back his hips and slammed into her backside.

Just like that, the demoness was silenced with a load moan.

With this new position, Klaus had even more control over his movements, allowing him to hammer into her with deeper, more powerful thrusts, and the shift spread her plump backside even wider.

More importantly, this stance freed his hands, letting him use her ample rear for something else, whether to grip, tease, or spank as he pleased.

Plap! Plap! Plap!

Klaus lifted his hips before driving them back down, sinking even deeper inside her. With his hands now free, he took full advantage by kneading her soft globes before delivering a sharp slap to her plush backside.

Again and again, his palm met her skin, leaving behind reddening imprints.

The rhythmic slapping of his hand against her flesh punctuated the air between Briar's gasps. Each strike sent a ripple through her body, amplifying the pleasure that coiled tightly in her core. She bit her lip, trying to stifle the moans that threatened to escape, but the combination of the deep, forceful thrusts and the stinging slaps was too much to bear.

"...Ah~ T-This is too m-much... I'll do it. I'll do it...I'll accept you as my master~ So please... stop slapping my butt~" Briar's voice trembled between moans.

Klaus, however, showed no mercy or signs of stopping. He suddenly picked up the pace and his thrusts grew even wilder.

Even though Briar's plump backside softened the impact of his powerful pounding, the pleasure was so intense that her mind became clouded with lust.

Her body couldn't stop reacting and her juices dripped endlessly, betraying just how much she had surrendered to the sensation.

She had taken too much. The pleasure surged through her body, radiating from both her stuffed backdoor and soaked womanhood, climbing up her spine like an electric current before crashing into her brain.

Her climax was inevitable. Her legs trembled, and both holes tightened instinctively, gripping onto him like a vice.

Klaus wasn't far behind. The growing tightness around his cock pushed him to the edge, his thrusts becoming erratic as his own release approached.

His length swelled up within her, pulsing with the promise of his impending climax.

The sensation made Briar let out a moan louder than any before, one final cry of pleasure just as both of them reached their limits!

"Shit! I'm cummming! I'm cummming! It's a big one, so accept it just like this!!"

With a deep, shuddering groan, Klaus clutched Briar's waist and surrendered to the overwhelming release he had fought to hold back.

The absurdly large amount of semen immediately surged into her backdoor like a fire hose!

Briar's eyes rolled back into her head just before she heavily squirted and her fluids further soaked the bed and dripped onto the floor.

Klaus, astonished by the sheer volume of his own ejaculation, was shocked. It was definitely his biggest load ever. He didn't think he had ever orgasmed like that with his ex-girlfriend.

Furthermore, he was still ejaculating!

"Haha! That's so awesome... A succubus is really the best."

He suddenly lost all strength in his legs and collapsed, falling on top of the succubus. As a result, his penis plunged even deeper into Briar's backdoor. However, she didn't react.

Klaus realised this only after a few moments of being in pure never-felt-before bliss. It was like he had temporarily ascended into heaven and then descended back into reality.

"Hey, hello! Are you okay?"

Seeing as Briar was unresponsive, he shook his head and called out, but there was no response.

"Hello! Hey!"

"What's wrong? Hey!"

Panicking, he called out a few more times, fearing something had happened.

Thankfully, he could feel her body heat and heartbeat through their shared physical connection.

It was the most natural kind of physical connection between male and female, except it was between a human and a demoness.

She had just fainted and lost consciousness.

"So, it's like that," Klaus muttered to himself with a relieved laugh. "I was pretty intense for her first time, but she handled it well. Damn. I can't move. That was really amazing."

Taking the opportunity to rest, he let out a sigh. Still, since he was still releasing his load, he instinctively pushed deeper into her backdoor, wanting to empty himself completely.

Besides, the sensation of her tight, warm insides was undeniably addicting. He couldn't resist the urge to stay buried within her just a little longer before finally pulling out.

A few minutes passed, and he immediately sensed something was off when he was about to sleep off.

He was still cumming!

"What? What the hell?"

Frowning, Klaus realized his pelvis hadn't gone limp.

While it was normal not to immediately lose an erection after the first round, the fact that he was still ejaculating after several minutes was highly unusual.

Wasn't this strange, and abnormal, even? He had never heard of such a thing happening before! From everything he had seen and heard, this wasn't how it was supposed to work.

Not even when he had been with Kelsey.

"T-This is... Zaaah!!"

Klaus groaned as his penis throbbed and became even more erect. Simultaneously, his semen suddenly increased in volume and exploded from Briar's ass.

His room now reeked of the mingled scents of their rough session!

Most concerningly, he was still ejaculating! And there was no sign of it stopping anytime soon!

"Ack! Stop! Stop! Stop!"

Klaus tried to will the flood of semen to halt, but that only intensified it. Already weak, he couldn't move, and his remaining strength was being actively drained by Blaine's ass. To think he would still be drained by the unconscious succubus, she was really greedy.

Or perhaps it was the result of something else.

"Hhnn!"

He stopped moving and nearly fainted. Finally, after ten continuous minutes of spilling his warm semen into Briar's backdoor, he eventually stopped ejaculating inside and managed to remove his now-limp penis.

He collapsed onto the unconscious Blaine and lost consciousness himself, his strength completely drained.

However, in his unconscious state, he didn't notice the changes occurring on his body.

On the back of his right hand, a seal mark had formed. It glowed faintly before the light faded.

The Master and Servant Soul Contract was complete.

Klaus had become the master of the demoness, and Briar, the succubus, had become the servant of the young Ascendant.