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Dudley's lungs were burning as he ran thorough the tunnel, his feet pounded against the damp concrete. The echo of the second set of footsteps followed close behind, gaining on him with each passing second. A flash of pale green light whizzed past his ear, illuminating the dark passage.
"You can't run forever, Big D!" Harry's voice had changed, deeper and colder than Dudley had ever heard it.
Dudley risked a glance back and saw his cousin's silhouette, wand extended, eyes glowing with an unnatural light. Another spell shot toward him, unfortunately that one hit him squarely between his shoulder blades. His legs instantly gave way, and he crashed face first onto the ground.
"Impedimenta," Harry muttered, his voice frighteningly calm as he approached Dudley. "Always worked well on the slow ones."
Dudley tried to crawl away, but his limbs felt like they were encased in cement. He rolled onto his back, facing his cousin who now stood over him, wand pointed directly at his face.
"H- Harry... please," Dudley gasped, trying to control his trembling voice. "Whatever I did-"
"Whatever you did?" Harry laughed, but it wasn't the laugh Dudley remembered. It was hollow. "Years of hell, Dudley. My entire lifecursed by your fists, your taunts, your gang hunting me down."
Harry crouched beside him, his scar more pronounced than ever, pulsing with a faint red glow. "You know what's funny? After I killed Voldemort, I thought I'd feel... peace." He twirled his wand between his fingers. "But all I felt was emptiness. Then I realised, why stop there? Why not make everyone who ever made my life miserable pay for it?"
Dudley's throat went dry. "You've gone mental."
"No, I've realised the truth," Harry said, his eyes flashing dangerously. "The wizarding world calls me their saviour, their hero. They don't know what darkness lives inside me. I've got power now, Dudley. Real power."
Dudley gazed up at Harry, his heart pounding wildly against his ribs, each beat like a desperate plea for mercy. His mind searched desperately for some trace of the cousin he once knew, but all that stood before him was a shadowed figure, wand raised, eyes glinting with a sinister light. An icy terror crept through Dudley’s veins, chilling him to the core as Harry whispered a spell. A flash burst forth from the wand's tip, piercing the darkness.
The agony was instant and consumed his entire world, a searing fire that seethed through his every nerve. Dudley shrieked, a raw, primal sound torn from deep within him as he writhed on the cold concrete. His body convulsed uncontrollably under the relentless pain that felt like it might split him apart.
The world around him faded into a blur of agony and despair. He twisted and turned against his will, agonisingly slowly because of the former spell Harry cast on him, each movement scraping fresh wounds along the ground.
When it finally stopped, he wandered if I was dead but then Harry's laughter broke through his haze, and he knew it wasn't over.
"Please," he begged.
Harry responded by laughing wickedly as he pressed his wand into Dudley's ribs. "You think this is over?"
Dudley lay writhing on the ground, his cries piercing the air as a relentless torrent of agony crashed over him, each wave more brutal than the last. His screams tore from his throat, raw and unyielding, as his vision blurred and darkness threatened to consume him.
When the torment ceased for the second time, he heard himself pleading desperately for forgiveness and mercy. Once more, Harry laughed, a chilling sound that echoed in the oppressive silence, but instead of resuming the torture, he commanded Dudley to rise to his knees. With slow and trembling limbs, and a pounding heart, Dudley obeyed, scrambling upright. His vision was hazy, tears mingling with the sweat on his face, but he could still discern Harry's expression through the blur. Harry's eyes burned with fury, his face a mask of unyielding anger and madness.
Dudley's brain struggled to understand his cousin's intentions, a fog of confusion obscuring his thoughts. But then, Harry's hands moved to his waist, slowly working the buttons of his trousers. As the fabric parted, Dudley's eyes widened as his gaze fixed on Harry's cock, the hard length hard and ready.
Horror surged through Dudley's body, a realization of what Harry intended crashing over him like ice water. He recoiled instinctively, shaking his head.
"No," Dudley whispered, his voice barely audible, throat raw from screaming.
Harry's eyes flashed dangerously. "Look at me," he commanded, voice razor sharp. When Dudley kept his gaze fixed on the ground, lips pressed tightly together, Harry's patience evaporated.
With lightning speed, Harry's fingers tangled in Dudley's sweat damped hair, gripping the strands viciously. Before Dudley could react, Harry slammed his head against the concrete wall behind them. The impact sent stars exploding across Dudley's vision, a sickening crack echoing through the tunnel as pain radiated from the back of his skull.
Dazed and barely conscious, Dudley couldn't react when Harry yanked his head forward. In one brutal thrust, Harry forced himself between Dudley's parted lips, shoving deep into his throat. Dudley gagged violently, his eyes watering as his cousin's length invaded his mouth.
"That's it," Harry hissed, his fingers tightening in Dudley's hair. "All those years of talking shit, let's see how you handle this."
Dudley tried to pull away, but Harry held him firmly in place, thrusting deeper until Dudley couldn't breathe. The unfamiliar sensation of being filled so completely made Dudley's stomach turn. His throat convulsed around the intrusion as Harry pushed further, which seemed to reach impossible depths.
"Fuck," Harry groaned, his head tilting back as he drove himself relentlessly into Dudley's mouth. The scent hit him then, a powerful, musky odour that reminded him of the school locker rooms after rugby practice. That familiar stench of sweat and unwashed clothes pulsated from Harry's groin as it repeatedly slammed against his face.
The nausea rose instantly in Dudley's throat, bile threatening to surge upward. His stomach clenched violently, but he fought against the urge to vomit with every fibre of his being, knowing instinctively that Harry would make him suffer even more if he did.
Harry's pace quickened, his breathing becoming ragged as his hips jerked erratically. With a guttural groan, he shoved himself to the hilt, holding Dudley's head firmly against his pelvis as he reached his climax. The hot, bitter fluid flooded Dudley's throat in rhythmic pulses, spurting hot and thick cum directly into his throat. Dudley couldn't escape the fluid which forced its way down his throat, each pulsation making him gag as Harry's cock throbbed against his tongue. The bitter and revolting taste overwhelmed his senses.
"Swallow it all," Harry commanded, his voice hoarse with satisfaction as he slowly withdrew, dragging the length of his still hard cock across Dudley's swollen lips.
With deliberate cruelty, Harry smeared the glistening remnants of his release across Dudley's cheeks and forehead, painting his cousin's face with the sticky liquid. The wet tip traced patterns on Dudley's skin, marking him.
"Look at you now," Harry whispered, admiring his handiwork. "Not so tough anymore, are you?"
The moment Harry released him, Dudley's body betrayed him. His stomach violently tightened, and he bent down as everything surged up his throat. The contents of his stomach splattered onto the concrete as the stench filling his nostrils. His body shook with each painful retch, tears streaming down his face as he expelled everything.
The bitter taste of bile and cum mingled in his mouth as he gasped for air between spasms, strings of saliva hanging from his lips. His throat burned raw from the dual assault of Harry's intrusion and the violent purging that followed shortly after. Dudley remained on all fours as the worst had passed, trembling, a thin stream of drool still connecting him to the foul puddle beneath.
"P-pathetic," Harry spat, watching Dudley's humiliation with cruel satisfaction.
Dudley wiped his mouth with the back of his hand, still on his knees, his entire body shuddering with aftershocks. The tunnel's air felt like ice against his face.
"Are..." Dudley's voice cracked, barely audible. He swallowed hard. "Are you going to kill me now?"
Harry's expression shifted, something darker than anger flickering across his features. He crouched down, his face inches from Dudley's. In one swift motion, his hand shot out, fingers wrapping around Dudley's throat with enough pressure to make breathing difficult but not impossible.
"Kill you?" Harry whispered, his breath hot against Dudley's ear. "Why would I want to kill you when I can have so much more fun with you?" A twisted smile spread across Harry's face, his teeth gleaming in the dim light.
His grip tightened around Dudley's throat, fingers digging into the soft flesh until Dudley's vision began to spot with black. Harry's eyes seemed to glow with an unnatural light as he leaned closer, his lips nearly brushing against Dudley's ear.
"I've only just started with you, Big D," he whispered, the childhood nickname now perverted into something sinister. "There are so many delicious ways to break you."
Before Dudley could even process what was happening, the tunnel around them began to warp and twist around him, and it felt like he was being forced through a tight rubber tube, not knowing what his future would bring, but hoping it would end quickly.