The barbell felt like a solid block of concrete across Alexander’s vascular shoulders. Stephen had loaded the sleeves with plates until the heavy steel bar bent under the immense pressure, but the searing, chemical fire burning inside Alexander’s veins made the massive weight feel almost weightless.

Directly beneath him on the rubber platform, the first woman lay on her back, her thighs pinned wide apart against his heavy combat boots.

"Squat!" bellowed Stephen, his deep voice echoing like a gunshot through the iron facility.

Alexander dropped his hips, his lean thighs flexing as he descended into a deep, agonizing repetition. As his pelvis slammed downward, his massive, rigid length drove into the woman’s core with a brutal, crushing force.

"Ah! Oh god, stop!" screamed the woman, her fingers clawing frantically at the rubber mats as the dual agony of the heavy weight and his relentless, thick penetration stretched her limits to the maximum.

Alexander didn’t stop. He pushed back up, his glutes and quads screaming in protest as he fought against the massive gravitational pull, only to drop back down into the meat a second later. He established a destructive, mechanical rhythm—a relentless cycle of extreme physical exertion sex, and white-hot muscular pain.

He drove himself straight into total mechanical failure. By the twelfth repetition, his legs locked up , his muscles turning to stone as he collapsed forward, unable to move a single inch under the crushing weight of the barbell.

But the weakness lasted only a few seconds.

Deep within his bone marrow, the crimson TMC serum surged violently. The burning sensation inside his chest suddenly spiked, mutating into a fierce, hyper-accelerated wave of recovery. His heart hammered against his ribs like a piston. Within five seconds, the lactic acid in his muscles was wiped clean, the overwhelming heat demanding more fuel, more movement, more destruction.

Alexander let out a guttural, animalistic roar, his lean frame exploding upward to rack the weight before instantly diving back down into the woman with a vicious, unbridled ferocity.

The workout quickly turned into an bloodbath of stamina. Over the course of the next hour, Alexander erupted inside his partners a staggering ten times, his explosive releases doing nothing to diminish his rigid, pulsing erection. The sheer, terrifying power of his stamina broke the women assigned to him. One by one, their bodies gave out from pure exhaustion and internal soreness; Stephen had to physically drag them off the platform and sub in new training partners a total of four times just to keep up with Alexander’s endless, destructive cycle.

Stephen stood by the console, arms crossed over his massive chest as he watched the chaotic spectacle unfold, a wide, genuine grin breaking across his scarred face.

"This fucking brat actually impresses me" said Stephen, letting out a low, amused chuckle as Alexander ruthlessly claimed the fourth woman while performing a set of heavy deadlifts. "I think we’re going to have to submit his evaluation to headquarters much earlier than expected. He’s definitely not a simple rookie anymore. Every single day he gets closer to the baseline of a low-level agent."

Stephen’s eyes narrowed into a glare his smile slowly fading into a look of deep intrigue as he analyzed the violent precision of Alexander’s movements.

"His biology is bizarre" muttered Stephen to himself, his voice dropping to a low whisper over the sounds of the wet friction and clanking iron. "He metabolizes the serum incredibly well. Perhaps... a little too well. Is it actually possible that his internal organs can withstand the true sequence?"

Slowly, Stephen turned his head, his gaze locking onto a heavily reinforced, biometric security cabinet resting in the far corner of the dark laboratory.

Through the thick, bulletproof glass of the locked container, sitting on a velvet pedestal, was a small, high-tech vial filled with a strange, glowing pink liquid. The substance didn’t look like the others; it emitted a fierce, unnatural luminescence, pulsing rhythmically in the shadows like a tiny, incandescent lamp.

Alexander’s body finally gave out the exact moment his eleventh climax erupted violently inside her core. The sudden, overwhelming drain of the serum’s cycle snapped his nervous system like a twig, and his lean frame collapsed face-first onto the padded mat immobilized.

The fourth woman lay beneath him, her breath coming in ragged, hysterical gasps as she wrapped her arms tightly around his sweat-slicked shoulders, desperately pressing her lips against his bare, vascular torso.

"Oh god, you are the best partner I have ever had" said the woman, her voice a breathless, ecstatic whimper as she squeezed her thighs around his softening length. "Your cock is magnificent... magnificent."

Stephen stepped onto the platform, his heavy boots thudding against the rubber as he looked down at Alexander’s unresponsive, face-down body with a dark, satisfied grin.

"I think our agent has finally hit his limit for the night" said Stephen, bending down to effortlessly hoist Alexander’s limp, heavy body over his massive shoulder like a sack of concrete. "I’m going to take him back to the recovery ward so he can heal, miss."

The woman quickly sat up, her eyes wide and dilated as she looked at Stephen desperate.

"Give me his agent number" said the woman, wiping the sweat from her forehead as she crawled toward the edge of the mat. "I need to rent him again. I’ll pay whatever it takes. His cock is literal magic."

Stephen let out a booming, deep laugh that echoed through the empty iron facility as he turned toward the secure service elevator.

"Of course, lady" said Stephen, a wicked smirk crossing his face. "I’ll send the booking details straight to your account."

With Alexander unconscious and draped over his shoulder, Stephen strode through the heavy reinforced doors, heading down into the subterranean laboratory.

Stephen shoved the heavy capsule door open and carelessly threw Alexander’s limp body inside, the reinforced glass sealing shut with a sharp, vacuum hiss. Automatically, the high-tech machinery whined to life as long, surgical needles punched straight through his vascular skin into his main arteries, and a clear, icy liquid resembling pure water began rapidly filling the chamber, submerging his lean frame.

"Should I..." muttered Stephen, his scarred fingers hovering over the glowing console as he stared at the incandescent pink vial in the adjacent cabinet. "Should I really test the limits of your DNA next time, kid?"