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Endurance Test

Summary:

Request from Anon on Tumblr.

How long can Adam Frankenstein fuck?

Turns out, nearly forever.

Work Text:

The fire in the hearth was the only source of light, casting dancing shadows that made my small cottage feel both cozy and vast. Outside, the wind howled, a lonely sound that usually brought me comfort. Tonight, it was a mere backdrop to the storm raging in my own chest. Adam sat in the chair I’d pulled close to the fire, his immense frame making the sturdy wood look like a child’s toy. He was watching me, his dark brown eyes intense and unreadable, the white streak in his long brown hair catching the firelight like a sliver of moon.

I had brought him in from the cold weeks ago, a being of immense strength and profound sorrow. We had spoken of philosophy, of life, of his creator’s abandonment. He was intelligent, articulate, and possessed a gentleness that belied his initally terrifying appearance. But tonight, the air between us had shifted. The unspoken thing, the thing I had only allowed myself to fantasize about in the darkest hours of the night, was finally here.

I stood up, my simple nightgown feeling thin and inadequate. He didn’t move, but his gaze tracked my every step as I crossed the room to stand before him. I reached out, my hand trembling slightly as I placed it on his shoulder. The fabric of his worn shirt was rough, but I could feel the solid muscle beneath, a wall of impossible strength.

“Adam,” I whispered, my voice barely audible over the crackle of the flames.

He tilted his head, his eyes searching mine. “Irene,” he rumbled, his voice a deep vibration that I felt in my bones.

I swallowed hard, my heart hammering against my ribs. “I’m not afraid of you,” I said, and it was the truth. I was afraid of what I was about to ask, afraid of my own desire, but not of him. “I want you. All of you.”

A flicker of something—surprise, hope, hunger—crossed his features. He slowly rose to his feet, and I had to crane my neck back to meet his gaze. At seven feet tall, he was a mountain of a man, his pale, scarred skin a tapestry of his violent birth. He was beautiful in his way, a tragic masterpiece.

“Are you certain?” he asked, his voice a low, careful growl. “I… I do not know my own strength. Or my own limits.”

I smiled, a bold, reckless smile. “Good. I want you to give me everything you can. Don’t hold back, Adam. I want all of you.”

He let out a shuddering breath, and then his hands were on me. They were huge, engulfing my waist, and he lifted me as if I weighed nothing. My legs instinctively wrapped around his waist, my arms around his neck, and his mouth was on mine. It was a desperate, hungry kiss, all the loneliness and longing of his existence poured into me. His lips were firm, and he tasted of the wild, of rain and earth.

He carried me the few steps to my bed, laying me down on the soft quilts as if I were made of glass. He stood over me for a moment, his dark eyes burning with a primal light. Then he was shedding his clothes, and I saw all of him. His body was a landscape of muscle and scar, a testament to his survival. My gaze drifted down, past the ridged plane of his stomach, to his cock. It was as magnificent and formidable as the rest of him, long and thick, with a network of pale, silvery scars tracing patterns along its length. It wasn’t a flaw; it was part of him, a part of his story.

He knelt on the bed, the mattress groaning under his weight, and settled between my thighs. He pushed my nightgown up, his calloused fingertips rough against my skin, sending shivers of anticipation through me. He found my clit, and I gasped at the first touch. He was clumsy at first, an inexperienced giant, but he was a fast learner. He watched my face, my reactions, his brow furrowed in concentration as he learned what made me gasp, what made me arch my back.

“Like this?” he’d rumble, circling the sensitive nub.

“Yes,” I’d breathe, my hands fisting in the quilts. “God, yes.”

When I was panting, slick and ready for him, he positioned himself at my entrance. He paused, his eyes locking with mine, seeking one last confirmation. I nodded, unable to speak. He pushed forward, and I cried out as he stretched me open, filling me completely. It was a sharp, intense pleasure, an overwhelming feeling of being utterly possessed. He was so big, so deep, I could feel him pressing against the very core of me.

He stilled for a moment, letting me adjust, his body trembling with the effort of restraint. “Alright?” he ground out.

“Don’t stop,” I begged. “Please, Adam, don’t ever stop.”

That was all the encouragement he needed. He began to move, a slow, deep rhythm that stole my breath. Each thrust was powerful, deliberate, claiming me inch by inch. His endurance was, as he’d warned, superhuman. He settled into a relentless pace, a steady, driving rhythm that pushed me higher and higher.

He wasn’t silent. He murmured my name, his voice a low, possessive chant against my ear. His hands roamed my body, one cupping a breast, his thumb brushing against my nipple until it was a pebbled, aching point. The other stayed between us, his fingers constantly working my clit, circling and pressing in time with his thrusts.

My first orgasm hit me like a tidal wave, a blinding rush of pleasure that made me cry out his name. But he didn’t stop. He didn’t even slow down. He just kept fucking me, his powerful hips driving into me as my inner walls clenched and spasmed around him. The pleasure didn’t subside; it built again, higher and more intense than before.

Time lost all meaning. The fire crackled, the wind howled, and the only sounds in the room were our mingled breaths, the slap of skin against skin, and my own cries of ecstasy. He came, his body going rigid above me, a deep groan tearing from his throat as he pulsed inside me. I felt the hot flood of his release, a gush of warmth that filled me completely. But true to his word, he didn’t stop. He didn’t pull out. He just kept moving, his cock still hard and demanding, his own cum making the space between us slick and wet, pooling on the sheets below. 

He came again, and again. Each time, he poured more of himself into me. I could feel it, a strange, fullness that was beyond anything I’d ever imagined. A slight, delicious pressure began to build low in my belly, a physical evidence of his relentless, virile passion. He was marking me, claiming me from the inside out, filling me until I was overflowing with him.

He was an animal, a beautiful, powerful beast driven by instinct, and I was his mate. He switched positions without ever pulling out, his strength astounding. He rolled onto his back, taking me with him so I was straddling his hips. His hands gripped my waist, guiding me, setting a punishing pace as I rode him. The new angle allowed him even deeper, and I threw my head back, lost in a haze of continuous, overlapping orgasms. I was no longer a person, just a vessel for pleasure, a body to be used and worshipped by this magnificent creature.

His mouth found my nipples, sucking and biting gently, sending fresh jolts of electricity straight to my core. His fingers never left my clit, a constant, maddening pressure that kept me on the edge, kept me falling over and over again.

Hours passed. I was sweating, my body trembling uncontrollably, my voice hoarse from screaming. The pleasure was so intense it was almost agony, a sweet torture that I never wanted to end. My mind was blank, wiped clean by the sheer force of his lovemaking. I was dimly aware of the dawn light beginning to filter through the window, painting the room in shades of grey and pink. He had been fucking me all night.

The world dissolved. There was no cottage, no fire, no howling wind. There was only Adam. Only the overwhelming reality of his body claiming mine. He had flipped me onto my stomach without ever breaking our connection, a feat of strength that sent a dizzying thrill through me. My hips were propped high on a stack of pillows, presenting myself to him, and the position was so primal, so submissive, it made me shudder with a fresh wave of desire.

He entered me from behind, and this new angle was devastating. He went deeper than before, a thick, unyielding pressure that forced a gasp from my lungs. His hands gripped my hips, his fingers spanning the curve of my pelvis, holding me in place as he began to move again. The rhythm was slower now, more deliberate, each long, powerful thrust a statement of ownership.

And with this new position came a new sensation. I was so slick, so open from hours of his attention, that I could feel every single detail of him. I could feel the unique, exquisite texture of his cock. It wasn't smooth like other men; it was a landscape of its own. The silvery scars that traced his length created ridges and bumps, and every time he drove into me, those textured lines dragged against my inner walls. It was a maddening, electrifying friction, a pleasure so sharp and distinct it was almost its own form of pain. It was as if he was fucking me with a sacred relic, and every scar was a line of scripture written deep inside me.

“Feel that?” he rumbled, his voice a low, possessive growl that vibrated through my entire body. He knew. He knew what he was doing to me.

I couldn't answer, only a choked sob escaping my lips. He angled his hips just so, and the head of his scarred cock brushed against a spot deep inside me that made stars explode behind my eyes. My orgasm hit me like a lightning strike, violent and all-consuming. My entire body seized, my inner walls clamping down on him like a vise, trying to trap that exquisite, textured feeling inside me.

He groaned as I convulsed around him, but he didn’t stop. He just kept that same deep, punishing rhythm, drawing out every last wave of my climax until I was a trembling, whimpering mess. As my spasms subsided, I felt him tense, his grip on my hips tightening almost to the point of pain. He came again, a hot, forceful flood that added to the immense pressure already building within me. I could feel my stomach swell just a little more, a tangible proof of his relentless passion. He stayed buried deep, pulsing inside me, his essence filling me to the brim.

He gave me only a moment to breathe before he was moving again, his stamina seemingly endless. He pulled out, the sudden emptiness a jarring loss, and then he was flipping me over onto my back again. He loomed over me, his pale skin slick with sweat in the firelight, his dark eyes burning with an intensity that stole my breath. He looked like a god, a terrifying, beautiful god born of lightning and sorrow.

He hooked his arms under my knees, lifting my legs and spreading them wide, folding me nearly in half. The position left me completely exposed, utterly vulnerable to him. He stared down at where we were joined, his gaze hungry, before looking back into my eyes.

“Again,” he commanded, his voice rough. “I want to see you when I fill you.”

He pushed back into me, and the sensation was even more intense. He was so deep, and the new angle allowed the scarred ridges of his cock to scrape against my sensitive front wall with every thrust. His hips began to snap, a faster, harder rhythm than before. The sound of our bodies meeting was wet and loud, a raw, primal symphony that was the only music I wanted to hear.

His hand found my clit again, his calloused thumb circling the overstimulated bundle of nerves. I cried out, my hands flying up to grip his powerful biceps for anchor. It was too much, the overwhelming fullness, the exquisite friction of his scars, the relentless pressure on my clit. I was going to break.

“Look at me,” he ordered, his voice leaving no room for disobedience.

I forced my eyes open, meeting his dark, burning gaze. He was watching me, watching every flicker of pleasure and pain on my face. His expression was one of fierce concentration, of utter possession. He was claiming me, not just with his body, but with his eyes.

That was my undoing. The combination of his stare, his touch, and the feel of his uniquely textured cock driving into me sent me hurtling over the edge again. This orgasm was different. It wasn't a sharp peak but a rolling, endless wave of pleasure. I screamed his name, my body arching off the bed as my pussy spasmed and clenched around him in a seemingly endless rhythm.

He came with me, a guttural roar tearing from his throat as he poured himself into me yet again. I felt the hot rush, the final, impossible surge that made my belly feel tight and swollen. It was a feeling of being utterly and completely taken, marked and owned in the most fundamental way possible.

“Adam,” I sobbed. “Please. Stop. I can’t… I can’t take any more.”

For the first time that night, he hesitated. His thrusts faltered. “Irene?”

“Please,” I begged, tears of exhaustion and overstimulation leaking from my eyes. “No more. I’m done.”

He stilled instantly. He stayed inside me for a moment, his body a warm, heavy weight over mine. Then, with a gentleness that was staggering, he slowly, carefully withdrew. The sudden emptiness was a shock, and a fresh wave of his warmth trickled down my thigh. I collapsed onto the bed, utterly spent, every muscle trembling.

He was beside me in an instant, his huge body curling around mine as if to shield me from the world. The frantic, animalistic energy was gone, replaced by a deep, tender concern. He brushed the damp hair from my forehead, his touch impossibly light.

“Did I hurt you?” he whispered, his voice thick with a fear that cut through my haze of exhaustion.

I managed to shake my head, turning to face him. I looked up into his dark eyes, which were now soft with worry. “No,” I breathed, my voice a ragged whisper. “You didn’t hurt me. You were… everything.”

He let out a long, shuddering sigh of relief, pulling me closer. I rested my head on his massive chest, feeling the steady, reassuring beat of his heart. His skin was cool against my overheated flesh, and I could feel the slight, distended swell of my own stomach pressed against him. It was a strange, satisfying feeling, a tangible reminder of the night.

“I was afraid,” he admitted, his voice a low rumble against my ear. “I was afraid I would break you.”

“You didn’t,” I murmured, my eyes drifting closed. “You just… remade me.”

He held me in silence for a long time, his hand stroking my back in a slow, soothing rhythm. The fire had died down to embers, and the grey light of dawn filled the room. The howling wind had softened to a gentle sigh. I was sore, exhausted, and utterly sated. I had asked for everything, and he had given me more than I could have ever imagined. He had claimed me, not with violence, but with a relentless, overwhelming passion that had shattered me and put me back together again. As I drifted off to sleep in the circle of his powerful arms, I knew one thing for certain: I was his. And I wouldn’t have it any other way.

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