Chapter 7: Sparring Session Gone Feral
The sterile air of the training room tasted of ozone and overused filters. It was a vast, soundproofed cube of reinforced steel and blackened observation glass, usually humming with the suppressed energy of repulsor tests or the grunts of team sparring sessions. Today, it held only the two of them, and a silence thicker than the mat underfoot.
Tony circled, his muscles coiled, every nerve alight. He wore simple gray training pants and a thin shirt, damp with sweat. Across from him, Damon moved with a predator’s fluid grace, his own shirt discarded, revealing a topography of scars and lean, cable-tight muscle. The wounds from the Hydra facility were pale silver lines now, thanks to the accelerated healing. Thanks to the compound. Thanks to what they’d done in the mud.
“You’re favoring your left side,” Damon stated, his voice echoing flatly in the empty space.
“I’m not.” Tony lunged, a feint followed by a sharp jab aimed at Damon’s solar plexus.
Damon deflected it easily, his forearm slapping Tony’s wrist aside with a sting. “You are. The muscle memory of the plasma burn. You’re protecting it subconsciously. In a real fight, that’s a pattern. A pattern gets you killed.”
“It’s healed,” Tony insisted, circling again, his breath starting to come harder.
“The tissue is healed. The fear isn’t.” Damon shifted, his bare feet silent on the mat. A bead of sweat traced a path down the center of his chest, over the defined ridges of his abdomen, disappearing into the waistband of his pants. Tony’s eyes tracked it.
He hated this. Hated the hyper-awareness, the way his focus splintered. It wasn’t just the fight. It was the smell of Damon’s skin, a mix of clean sweat and something inherently, uniquely him—a scent that seemed to bypass Tony’s higher brain and hook directly into his lizard spine. The compound had settled in his system, a silent tenant, but its rent was paid in urges.
“Keep your head in the fight, Stark,” Damon growled, and swept Tony’s legs out from under him.
Tony hit the mat with a grunt, the impact jolting through his recently-healed ribs. Before he could roll, Damon was on him, a knee pinning his good arm, a hand splayed on his chest. Damon’s face hovered inches above his, his blue eyes intense, pupils dilated in the low light. His sweat dripped from his chin, landing on Tony’s lower lip.
The taste was electric. Salt, heat, and that undeniable, biologically magnetic signature. It was like a key turning in a rusty lock deep in Tony’s gut.
A full-body tremor wracked him. His scientific mind screamed about pheromonal triggers, about olfactory receptors linked directly to the hypothalamus. The rest of him, the part awash in a sudden, debilitating wave of need, didn’t care.
His resistance melted. The fight drained out of him, replaced by a desperate, clawing hunger. His cock, confined in his training pants, went painfully hard in an instant.
Damon saw the change. He felt Tony go limp beneath him, saw the pupils blow wide, heard the sharp intake of breath. A flicker of something—disgust, understanding, possession—crossed his face. “There it is.”
Tony’s hands came up, not to push him away, but to clutch at Damon’s sweat-slicked shoulders. He pulled him down, crushed their mouths together. It wasn’t a kiss. It was a claim, a feeding. He licked into Damon’s mouth, chasing the taste, swallowing his groan.
Damon broke the kiss, breathing harshly. “Get a hold of yourself.”
Tony couldn’t. The need was a fire in his veins, fanned by the scent and the taste. It was worse than in the forest. There, it had been about survival. Here, in this sterile, safe place, it was just… need. Shameful, consuming need.
He twisted, breaking Damon’s pin. But instead of rising to fight, he slid down Damon’s body. He fumbled with the drawstring of Damon’s pants, his fingers clumsy.
“Stark,” Damon warned, his voice a low rumble.
“Shut up,” Tony gasped, his words muffled against the fabric. He yanked the pants and briefs down just enough. Damon’s cock sprang free, already half-hard, thick and heavy. The sight, the musky scent of him, demolished the last of Tony’s control.
He didn’t hesitate. He took Damon into his mouth, deep, gagging on the sudden fullness. He pressed forward until his nose met coarse hair, tears springing to his eyes from the strain. He hollowed his cheeks and sucked, a low, desperate moan vibrating in his own throat.
Above him, Damon hissed, his hands tangling in Tony’s sweat-damp hair. He didn’t push him away. He held him there. “Fucking addict,” he breathed, but there was no heat in it, only a ragged awe.
Tony worked him with a frantic, inelegant rhythm. Spit dripped down his chin. He was achingly hard himself, his own cock leaking a dark patch onto his gray pants, utterly ignored. This wasn’t about his pleasure. It was about the craving. It was about absorbing Damon, consuming him, taking the essence of him into his body to quiet the screaming emptiness the compound had carved inside him. He sucked and licked, his tongue pressing along the frenulum, and Damon’s hips gave a shallow, involuntary thrust.
“The team…” Damon gritted out, his thighs tensing. “Romanoff scheduled the room… in ten…”
Tony pulled off with a wet, obscene sound, gasping for air. He looked up, his lips swollen, his face a mask of abject desperation. “Then fuck me raw now,” he whispered, the words filthy and urgent. “Before they find us like this. I need it. I can’t… I can’t think.”
For a suspended second, Damon just looked at him—a genius brought to his knees, literally and figuratively, by a chemical chain he’d helped forge. Then, with a curse, Damon hauled him up by the arms and shoved him back against the nearest wall. It wasn’t the cool steel of the training room; it was a padded section, designed for impact. Damon shoved Tony’s training pants and briefs down to his ankles in one brutal motion.
There was no preparation, no preamble. Damon spat into his hand, slicked himself once, twice, his cock now fully erect and glistening. He hooked one of Tony’s legs over his elbow, lifting it, exposing him. The head of his cock pressed against Tony’s entrance, a blunt, unyielding threat.
“You’re sure,” Damon growled, a final, strained formality.
Tony answered by pushing back, taking the first inch with a choked gasp. It was enough.
Damon drove the rest of the way in, burying himself in a single, searing thrust. Tony cried out, his head slamming back against the padding. It burned, a sharp, glorious stretch that filled the screaming void inside him. It was punishment and relief, violation and salvation, all fused into one brutal act.
Damon set a punishing pace immediately, each thrust a hammer blow that shook Tony against the wall. The sound of skin slapping skin, of Damon’s guttural grunts and Tony’s ragged sobs, echoed in the sterile chamber. Tony clung to him, nails digging into the scarred flesh of Damon’s back, his face buried in Damon’s neck, inhaling him like oxygen.
“You’re so fucking tight,” Damon snarled into his ear, his breath scorching hot. “Still not used to it, are you? Still fighting it. But your body knows. It opens for me. It sucks me right in.” He punctuated the words with a deeper, sharper thrust that made Tony see stars.
Tony was babbling, broken phrases lost between moans. “Please… god… right there… don’t stop…”
His own cock, trapped between their sweat-slicked bodies, jerked and leaked, completely untouched. Pleasure was coiling tight in his gut, a storm building from the sheer, degrading fullness, from the chemical cocktail flooding his system in response to the joining. This was the dose. This was the fix.
Damon’s rhythm fractured. His thrusts became erratic, harder, deeper. “Gonna come,” he warned, his voice thick. “Gonna pump this fucking cure so deep into you…”
That was all it took. Tony’s orgasm ripped through him with violence, a silent, open-mouthed scream as he came in hot, pulsing stripes between their stomachs. The convulsions of his body clamped around Damon’s cock, milking him, triggering Damon’s own release with a ragged shout.
Tony felt the hot flood inside him, a claiming that went beyond the physical. It was the antidote and the poison in one.
For a long minute, they stayed like that, pressed against the wall, joined, panting like exhausted animals. The only sound was their heaving breaths and the distant, mechanical hum of the facility.
Then, with a soft, wet sound, Damon pulled out. Tony’s leg slid from his elbow, and he slumped, boneless, against the wall. He was a mess of sweat, spend, and shame.
Damon stepped back, fastening his pants with quick, efficient movements. He looked down at Tony, his expression unreadable. “Clean yourself up. They’ll be here in four minutes.”
He turned and walked toward the showers without a backward glance.
Tony pushed himself upright, his body thrumming with a false, chemical vitality. The pain was gone. The fatigue was gone. His mind was preternaturally clear, sharp as a scalpel. And the hunger, for now, was silent.
As he gathered his clothes, his ears caught the faint, distinctive chime of the training room door disengaging down the hall. He had just enough time. He looked at the smear of his own release on the padded wall, then at Damon’s retreating back.
The cure was working. The dependency was deepening. And they both knew it.