Naruto: The Viking Thorfin Becomes a Inuzuka In The World of Shinobi

Thorfin's eyes snapped open at the familiar sound of the door crashing open. His body was still heavy with exhaustion, and his muscles ached from the constant strain of the brutal training. But something inside him flared—today felt different. His gaze darted around the room, and his eyes landed on the girl in the corner, still curled up and barely stirring. She was no older than six, and the cold air had wrapped itself around her like a blanket. She hadn't heard the order, too tired to respond.

"Up. Now," the agent's voice cut through the cold silence, sharp and commanding.

The girl remained still, her breathing shallow, too weak to heed the call. She stirred, but only slightly.

One of the agents, a tall man with a jagged scar running down his face, shot a disdainful glance at the girl. His lips curled into a sneer. "Pathetic," he muttered, his voice dripping with contempt. He took a few deliberate steps forward, bending down and grabbing her shoulder roughly. "Did you hear me?"

The girl's eyes flickered open, but she didn't seem to understand where she was. With a small, frightened whimper, she attempted to sit up, her tiny body trembling. She tried to stand, but her legs buckled beneath her, sending her crashing to the cold floor.

The agent's face twisted in annoyance, and without hesitation, he delivered a brutal kick to the girl's side. The harsh impact echoed through the room, and the girl cried out in pain, curling into herself, trying to shield her bruised body from further harm.

The other children, including Thorfin, watched in silence. Fear. Helplessness. They had all learned by now that it was better to remain still, to avoid drawing attention. Showing weakness meant suffering.

"Why."

But today, Thorfin felt the anger rise within him. His fists clenched at his sides as he watched the agent torment the girl. The anger boiled inside him like a fire, and for once, he couldn't stay silent.

"Leave her alone!" Thorfin's voice rang out, sharp and firm.

The room fell silent, all eyes turning to him. The agent's gaze locked onto Thorfin with cold, calculating malice.

"Is that so?" the agent sneered. "You want to be a hero now and defy orders?" He took a step closer to Thorfin, towering over him. "Do you think you're better than her? Better than any of them?"

Thorfin stood tall, despite the pounding of his heart in his chest. His breath came in short, steady bursts, and his eyes blazed with defiance. "She's just a kid," he said, his voice steady but filled with undeniable fury. "She doesn't deserve this."

The agent chuckled darkly, an eerie sound that sent a chill through the room. "You have guts, I'll give you that. But guts won't save you here." He stepped forward, shoving Thorfin hard in the chest, making him stagger back.

Thorfin's rage flared, and before he could stop himself, he lunged at the agent, his fists swinging with all the strength he had left. He landed a blow to the agent's ribs, but it barely fazed him. The agent's cold expression never wavered as he grabbed Thorfin by the wrist and twisted it painfully.

"You think you can stand up to me?" the agent growled, his voice a low, mocking rasp. With a swift motion, he slammed Thorfin into the wall, forcing the wind out of him. The pain in his back was blinding, but he tried to fight through it, pushing himself to his feet.

But the agent wasn't done.

With a brutal, calculated strike, the agent twisted Thorfin's arm behind his back, snapping his hand at an angle. Thorfin's scream of agony filled the room as his wrist was shattered. The pain was unbearable, but Thorfin's face remained set, gritted with determination. He refused to show weakness. Not here. Not now.

The agent stepped back, watching Thorfin crumble to his knees, clutching his broken hand. "You really think you can defy me?" he taunted, his voice cruel. "You'll learn. You'll all learn." His eyes flickered with disdain as he turned back to the girl as his next strike to her sent her into unconsciousness

And as if he was taunting me he looked right back at me when he said it. "Get back in line."

Thorfin struggled to rise, his vision blurring from the pain, but he forced himself upright, his good hand clutching his broken wrist. His body screamed in protest, but he didn't falter. Not in front of them. He wouldn't let them break him.

The rest of the day was nothing short of a nightmare. The physical training resumed without mercy. Thorfin could barely keep his balance as they forced him to crawl through the obstacle course, his broken hand hanging limply at his side. Every misstep was met with a kick or a shout from the agents. His body screamed for rest, but there was no time for that. Every mistake, every failure, was a chance for them to tear him down further.

Night had fallen in the cold, sterile halls of the Root facility. The usual routine was over, and the children were exhausted, bruised, and barely able to stay awake. But the day wasn't done yet. Not for them. Not here.

The agents walked through the room, their footsteps heavy and deliberate, and they didn't have to say a word. The children knew what came next. They were ordered to form a circle, lined up, each facing their opponent. The rules were simple: fight until you couldn't fight anymore. Until you blacked out from exhaustion or injury.

Thorfin could feel the pain in his body. The dislocated arm, the broken knuckles of his other hand—every movement was agony. Have you ever tried fighting with a dislocated arm and broken knuckles? It fucking sucks. The pain was so sharp, it blurred his vision with every breath. Every time he tried to block or strike, his arm screamed in protest, but he couldn't show weakness. Not now. Not ever. The cold eyes of the agents watched them, silent but ever-present, waiting for the first sign of failure.

The first fight was a blur. He still managed to win, somehow. His opponent wasn't as skilled, he was able to land a knee to the girls temple, with blood splattering everywhere. Still he didn't care, he couldn't afford to care. His determination outlasted his pain. But it didn't matter. The next fight was worse. Much worse.

They pushed him into the center of the circle, and his next opponent stepped forward—Hoki. A bigger boy, taller, thicker, and with the mark on his forehead that identified him as a member of the Hyūga clan, Branch family. The Byakugan gleamed in his eyes, a power Thorfin had come to dread. The Hyūga had an unfair advantage, especially in hand-to-hand combat. They were trained in the Gentle Fist, at the age of 5. Its a style of fighting that could incapacitate an opponent with precise strikes to their chakra points. It was a technique designed to break someone without leaving visible damage, and Thorfin was no stranger to its brutality.

But what made it worse was that Hoki didn't hold back. He never pulled punches. And the agents—they didn't stop him. They allowed all forms of combat. It didn't matter if the fight was unfair, or if it was brutal. It didn't matter if Thorfin was already broken.

Hoki's smirk widened as he cracked his knuckles. "You sure you want to fight me like that?" he taunted, his voice dripping with mockery. "Don't worry, I'll make it quick."

Thorfin's teeth gritted together, the words of the agents echoing in his head:

Fight.

Survive.

He couldn't afford to let his pain show, not even for a second.

The fight began with a burst of speed. Thorfin tried to move, but his body was sluggish from the pain, his broken hand dragging him down. His dislocated arm felt like it was on fire, every movement pulling at the joint. Hoki wasted no time, his Byakugan flaring as he closed the distance in an instant. He landed a brutal strike to Thorfin's chest, just under the ribcage, knocking the wind out of him. Thorfin staggered back, gasping for breath, but it didn't matter. He couldn't stop.

Hoki taunted him again, laughing as Thorfin fought to stay upright. "Come on, don't tell me that's all you've got. I expected more from an Inuzuka."

Thorfin's vision was blurry, but he forced himself to focus, to keep fighting. He swung his good arm, aiming for Hoki's head, but it was too slow. Hoki blocked it effortlessly with a sharp jab to his shoulder, sending another wave of pain through his already battered body. Every time he tried to throw a kick, every time he tried to block a blow, it was as if his body wasn't his own anymore. He couldn't stop it.

Hoki grinned, stepping forward and slamming a fist into Thorfin's stomach, knocking him to the ground. The breath left his lungs in a rush, and he gasped for air, struggling to regain control. His broken hand throbbed, and the dislocated arm felt like it was about to tear itself out of the socket.

"Pathetic," Hoki said, crouching beside him, his Byakugan trained on Thorfin's body like a hawk eyeing its prey. "You should have stayed down."

But Thorfin wasn't going to stay down. No matter how bad it hurt, no matter how much his body screamed for him to stop, he refused to give in.

With what little strength he had left, Thorfin pushed himself up, throwing a desperate punch with his good hand. But Hoki was ready. He sidestepped the blow, easily avoiding it, and slammed his fist into Thorfin's already bruised ribs. Thorfin's vision flashed white as the pain tore through him, but still, he didn't fall.

He couldn't. Not yet.

The agents stood on the sidelines, watching with cold, detached eyes, their faces expressionless. If they were enjoying the show, they didn't let it show. They didn't stop it. They praised Hoki instead, the Hyūga prodigy, for his speed and precision. It was as if Thorfin didn't even matter to them.

Thorfin barely registered the words Hoki spat at him. His vision darkened, his body swaying, but he refused to go down. Not like this. Not in front of them. His broken body might not be able to keep up with Hoki's brutal strikes, but his spirit was still there.

With a final, feeble push, Thorfin threw himself at Hoki, his vision blackening at the edges. He barely landed the hit before his body gave up, collapsing to the floor in a heap, unconscious.

The agents didn't care. They'd gotten what they wanted: pain, suffering, submission. And when Thorfin finally passed out, they moved on to the next child. Another fight. Another lesson. And tomorrow? Thorfin would fight again.

Thorfin lay on his cot, his breath shallow, but his mind was clearer than ever. The pain in his hand was a reminder, a constant burn that kept him awake. He had stood up for the girl. He had fought back.

Thorfin's eyes slowly flickered open, his head pounding and his body aching in a thousand different ways. The faint sound of footsteps echoed in the room as the darkness seemed to weigh heavier than it had before. His breath was labored, but it wasn't just the pain that made his chest tight—it was the feeling of someone else's presence beside him.

"You're awake," a soft, shaky voice murmured.

Thorfin's blurry vision focused on the figure standing before him. Aki. She was sitting on the floor next to him, her small frame hunched in a way that looked defensive, fragile. Her face was streaked with dried tears, and the bruises on her skin were a mirror to his own. But there was something different in her eyes—something that told him she had been crying, even when the agents weren't watching.

Her voice trembled as she spoke again, quieter this time. "I just... I wanted to say thank you. For trying to stand up for me."

Thorfin tried to speak, but his body refused to cooperate. His throat was too dry, his limbs too stiff, and his hand felt like it was about to fall apart. Still, he focused on her face, and despite the pain, he managed a faint, almost apologetic smile.

"I'm sorry," Aki whispered, her voice breaking as her eyes filled with more unshed tears. "I'm so sorry you were punished because of me. You didn't deserve it. None of us deserve this."

Thorfin's gaze softened, but he couldn't bring himself to say much. It wasn't her fault—none of them deserved what had happened. He wanted to tell her that, to reassure her that he wasn't angry, but his throat hurt too much. Instead, he gently shook his head, letting her know that he didn't blame her.

"You don't have to apologize," he rasped, finally managing to croak out the words. "I did it because... I couldn't just watch."

Aki's shoulders shook slightly as she wiped at her eyes, her broken, bruised expression softening for a brief moment. "I... I'll try to be stronger. For you. For all of us."

Thorfin watched her carefully as she stood, still shaky, but there was a quiet resolve in her step. She wasn't just a helpless child anymore. She was learning to endure, to survive—just like him.