Chapter 9: Advanced Training
For three days, Aron moved through the house like a ghost haunting a life that no longer fit him. The clatter of breakfast dishes was an assault. His father’s benign questions about class were cryptic codes he couldn’t decipher. The shadow of the hallway outside his room held the memory of her palm against his chest, pushing him back.
He avoided her. She let him. She was a whirlwind of normalcy—blasting music from her room, laughing on the phone in the kitchen, thundering down the stairs with her gym bag. Her indifference was a thicker wall than any confrontation.
His body, however, remembered everything. In the shower, the sting of hot water on his skin felt like her breath. The ache, deep and internal when he sat too long, was a persistent ghost of her finger. He’d wake hard and throbbing from dreams of crushing heat and the sound of skin on skin, filled with a shame that only intensified the need.
The theory was gone. In its place was a raw, hungry knowledge.
On the fourth evening, the house was quiet. His father and Lisa were at a fundraiser. Aron sat at his desk, a physics textbook open to a chapter on thermodynamics. The words were nonsense. All he could think about was entropy—the gradual decline into disorder. He felt it in his bones.
His door opened.
He didn’t need to turn. The air changed, charged with her. She leaned against the doorframe, arms crossed. She was wearing low-slung pajama shorts and a tight tank top, no bra. The casual confidence of it was a weapon.
“You’ve been hiding,” she said. Her voice wasn’t accusing. It was stating a fact.
“I haven’t,” he mumbled, staring at an equation about energy transfer.
“Look at me.”
He turned. Her gaze was cool, appraising. She pushed off the frame and walked toward him, each step measured. She stopped behind his chair. He could feel the heat of her body, smell her shampoo. Her hands came to rest on his shoulders. He flinched.
“You’re tense.” Her thumbs dug into the knots of muscle at the base of his neck. “Still thinking too much.”
Her hands slid down, over his chest, palms flat. Her touch was electric, burning through the thin cotton of his t-shirt. He leaned back into her, a traitorous reflex.
“Have you been practicing?” she whispered into his ear. Her breath was hot. One hand drifted lower, over his stomach, her fingers slipping beneath the waistband of his sweatpants. “Have you thought about it? Touched yourself and imagined it was me?”
He whimpered. It was answer enough. His cock, already stirring, thickened against the confinement of his clothes.
“Good.” Her other hand appeared in front of him, fingers curled around something cold and metallic. She placed it on the open textbook, right over a diagram of a decaying system.
It was the plug from before, but different. Larger. Gleaming, cruel steel, flared at the base, tapering to a formidable thickness. It looked medical. Invasive.
Aron’s breath hitched. “Chloe…”
“You graduated from the starter size,” she said, her voice a low purr. Her hand inside his sweatpants found him, wrapping around his hardening length. She squeezed, not stroking, just owning him. “Time to level up.”
“I can’t,” he breathed, even as his hips pushed up into her fist.
“You can. You will.” She released him and spun his chair around to face her. She looked down at him, a scientist observing a promising specimen. “Stand up. Take these off.”
His hands trembled as he obeyed, pushing his sweatpants and boxers down his legs. He stood naked before her, exposed. Her eyes raked over him, lingering on his erection, which twitched under her scrutiny.
“On the bed. On your hands and knees.”
The command, delivered so flatly, sent a jolt of pure submission through him. He moved to the bed, the comforter rough against his knees and palms. He heard the cap of the lube click open. The sound was obscenely loud.
He felt her knee on the mattress behind him. Cool, slick fingers probed him, one, then two, sliding in with a practiced ease that made him gasp.
“You’re still loose,” she mused, scissoring her fingers. The stretch was immediate, a burn that was already tipping into pleasure. “See? Your body remembers. It wants more.”
She withdrew her fingers. The cold, blunt tip of the steel plug pressed against him. He tensed, every muscle clenching.
“Breathe out, Aron. Push back against it.”
He exhaled, a shaky stream of air, and tried to relax. She applied pressure. It was immense, an impossible stretch. He whined, forehead dropping to the comforter.
“Push,” she commanded, her voice hardening.
He bore down, his body screaming in protest. The thick head of the plug popped past the tight ring of muscle with a sudden, shocking give. He cried out, a strangled sound.
“Fuck, yes,” she hissed, her own breath catching. She didn’t stop. Slowly, relentlessly, she worked the rest of the tapered length into him, millimeter by agonizing, filling millimeter. When it was seated fully, the flared base resting against him, he felt impossibly full, stretched to a brink that was both pain and the most intense sensation he’d ever known. He was panting, shuddering, his cock hanging heavy and neglected between his legs.
She ran a hand over his ass, admiring her work. “Look at you. Taking it like a champ.” She leaned over his back, her lips against his ear. “Now, you’re going to keep it in. All night. While we do other things.”
Before he could process that, her hand snaked underneath him, grabbing his cock in a tight, rough grip. She jerked him hard, a brutal, fast pace that had nothing to do with his pleasure and everything to do with her demonstration of control. The plug inside him shifted with every movement, hitting that deep, maddening spot with each stroke of her hand.
“You’re my little experiment,” she grunted, her own arousal evident in the husk of her voice. “My secret project. I’m gonna see how much you can take. How much you need.”
The dual assault was overwhelming. Pain and pleasure fused into a single, white-hot wire of sensation. He was babbling, tears smearing the comforter. “Please… Chloe… I can’t…”
“You can. You’re gonna come. You’re gonna come with this fat piece of steel buried in your ass.” Her pace on his cock became punishing. “Come for me. Now.”
His orgasm was ripped from him, a convulsive, violent seizure that had him seeing stars. It shot out of him in ragged stripes, untouched by any tenderness, a purely animal release. He collapsed onto his side, boneless, the hard, unyielding presence inside him a constant, throbbing reminder.
Chloe wiped her hand on his thigh. She looked down at him, panting slightly, a faint sheen of sweat on her upper lip. Her eyes were bright, fascinated.
“Remember,” she said, tapping the flared base of the plug, making him whimper. “All night. I’ll check on you in the morning.”
She left the room without a backward glance.
Aron lay curled on his side, the aftermath buzzing in his veins. The full, stretched feeling was a cage and a comfort. The shame was still there, a cold sediment in his gut. But layered on top of it, hotter and more immediate, was a profound, terrifying hunger. For the pain. For the submission. For her.
He was ruined for anything else. The thought didn’t bring horror anymore. It brought a dark, quiet certainty. The experiment was underway, and he was no longer the scientist. He was the reaction, waiting for the next reagent to be added, craving the inevitable, destructive compound.
The compound, when it arrived hours later, was her. The house had settled into a deep, suburban silence, broken only by the hum of the refrigerator downstairs. Aron lay on his side, a prisoner in his own bed. Every slight shift sent a jolt through him, the foreign, rigid bulk inside him a constant, humiliating anchor. Sleep was impossible. The ache had moved from sharp insistence to a dull, full throb that mapped the exact shape of the intrusion.
He heard her door open down the hall. His entire body went rigid. Soft footsteps approached, paused outside his door, and then entered without ceremony. The hallway light framed her silhouette before she clicked the door shut, plunging them back into the blue dark. She said nothing. He listened to the rustle of fabric as she undressed.
The mattress dipped behind him. Her naked body pressed against his back, her skin shockingly warm. Her hand slid over his hip, finding him hard again. A small, husky laugh escaped her. “See? Your body knows what it’s for now.” Her other hand reached around, her fingers tracing the cool, flared base of the plug where it met his skin. He shuddered violently. “Does it hurt?”
“Yes,” he whispered.
“Good.” She bit his shoulder, not gently. Her hand began to move on his cock, a slow, tormenting stroke. “You need to learn the difference between pain and instruction. This,” she tugged him once, firmly, “is instruction.” She pressed against the plug, not pushing it deeper, just applying a steady, unforgiving pressure that made him gasp. “That is just sensation. Your job is to take it.”
Her mouth was on his neck, his ear, as she worked him. “I bet you’ve been lying here thinking. That’s your problem.” She sped her hand, her grip tightening. “You think about right and wrong, about stepsisters and fucked-up shit. I don’t think. I feel. I want. And right now,” her voice dropped to a filthy whisper, “I want to feel this tight, stuffed little hole around my fingers while I make you come.”
He groaned, a sound of pure submission. Her admission demolished his last pretense. This wasn’t just his corruption. It was mutual.
“On your stomach,” she ordered, pulling her hand away.
He moved clumsily, the plug shifting inside him as he turned over. She shoved a pillow under his hips, raising his ass. The vulnerability was absolute. He felt exposed, offered. He heard the slick sound of her using the lube. Then her fingers were back, not on the plug, but circling the stretched, sensitive rim around it.
“Look at how open you are,” she murmured, her voice thick with a clinical awe. “It’s swallowing the base. I could probably fit my thumb in beside it.” She tried, and the intense, splitting pressure made him cry out into the mattress. “Maybe next time.” She removed her thumb and spat. He felt the warm wetness land where her thumb had been. “Now, you’re going to take it out.”
His mind went blank. “What?”
“You heard me. Remove it. Slowly. I want to watch.” Her weight settled beside his hip. “Do it.”
His hand shook as he reached back. His fingers found the cold, smooth base, slick with lube and spit. The reality of it, of actively pulling this thing from his own body under her gaze, was a new zenith of shame. He took a shaky breath and pulled.
The initial movement was a searing burn of reversal. A low whine escaped him. Inch by terrible inch, the thick, tapered shape dragged through the clenching, over-stimulated ring of muscle. It felt vast, impossible. His vision swam. The sensation was less pleasure now than a brutal, overwhelming fullness being forcibly reversed, a profound violation in both directions.
“Slower,” she commanded, her breath hot on his skin.
He obeyed, the stretch so intense he saw stars. With a final, wet, sucking pop, it came free. The sudden, empty void it left behind was almost more shocking than its presence. He felt gaping, hollowed out, achingly empty. He collapsed, cheek against the damp comforter, panting.
He expected her to touch him there, to fill the emptiness with her fingers. She didn’t. Instead, she moved quickly, swinging a leg over his back to straddle his thighs. He felt the hot, wet notch of her against the base of his spine. “You’re empty now,” she said, leaning forward to speak directly into his ear. Her voice was a raw scrape of sound. “But I’m not.”
Her hand guided him, pulling his hips up. He was soft, overspent, but she was relentless. She positioned the head of his limp cock at her entrance and sank down onto him with a single, impaling motion. She was searingly hot and impossibly tight, and the shock of that heat around his sensitive flesh made him gasp. She was also incredibly wet, her arousal coating him.
“Fuck,” she moaned, beginning to move, riding him with a frantic, grinding rhythm. “God, the stretch… you feel so… fucking…” Her words dissolved into gasps. She was using him, a tool to get herself off on the spectacle of his degradation. The thought should have sickened him. Instead, a final, desperate spark of arousal flared in his gut. He pushed back weakly against her, a faint, answering thrust.
It was enough. Her internal muscles clamped around him in a fierce, rippling spasm. She let out a choked cry, her body bowing as she orgasmed, her nails digging into the flesh of his back. She rode the waves, milking his soft cock until she shuddered and stilled, her sweat dripping onto his skin.
For a long moment, she stayed there, seated fully on him, both of them breathing raggedly. Then she lifted herself off. He slipped out of her with a soft, wet sound. She slumped beside him on the bed.
The silence stretched, filled only by their slowing breaths. The phantom ghost of the plug haunted him, an echo of fullness in a now-empty channel. The smell of sex and lube and their sweat was suffocating.
She left. The hollow ache inside him was a physical truth. He didn’t move. He was the reaction, complete and irrevocable, left in the quiet aftermath to survey his own ruin. The compound had been formed, and it was corrosive. It was them.