The air in Training Ground Seven had an unusual, almost strange lightness to it. The dense layer of tension that had covered the genin during the Chūnin Exams had finally broken, replaced by the relaxed murmur of camaraderie. They had survived their first great test together, and you could feel it in the atmosphere. The Hokage, faced with the sudden and monumental arrival of Tsunade Senju, had decreed a one-week recess before continuing the exam. Bureaucratic procedures, he called it, though everyone knew it meant the entire village was in a state of reorganization.
Ino Yamanaka gestured with her hands, her voice a conspiratorial whisper aimed at her teammates.
"I'm telling you, I saw the way she looked at him. She's definitely into the more serious types, Shikamaru. You've got a shot."
Shikamaru didn't even bother to open his eyes. He was lying on his back in the grass, hands clasped behind his head, using the clouds as his only entertainment.
"What a drag. Why would I want to get her attention? Too much effort."
Choji Akimichi, sitting beside him with an open bag of chips, spoke with his mouth full.
"But she's really pretty, Shikamaru."
"That just makes it more of a drag," Shikamaru sighed. "Pretty girls expect you to do things. Like walk, talk, or take them to dinner. I'd rather watch the clouds."
Not far away, Kiba stretched with a smug air. Akamaru, at his feet, barked in agreement.
"Akamaru says this whole place is troublesome," he said, though his tone was more boastful than concerned.
Shino, standing by a tree, adjusted his sunglasses. His voice, as always, was a monotone murmur that nevertheless managed to cut through the noise.
"Logic dictates that your dog is reacting to the large number of unfamiliar chakras that have entered and left the village. It is a predictable sensory response."
Kiba scowled. "Whatever, Shino. The point is, my nose and Akamaru's are more reliable than your bugs."
Just then, three figures appeared in the clearing. Naruto's blond hair was unmistakable, even from a distance. He was flanked by Sakura and Hinata, and all three seemed to be in good spirits after their lunch at Ichiraku.
"Hey, you're late!" Kiba barked as a greeting. "We were just about to start training without you."
Naruto laughed and rubbed the back of his neck. "Sorry, sorry. I treated Sakura-chan and Hinata to ramen and lost track of time, believe it!"
Sakura rolled her eyes, though a small smile tugged at her lips. "What he means is that he ate seven bowls and then tried to order an eighth."
"It was a new record!" Naruto protested.
Hinata blushed slightly, her voice barely a whisper. "It was... impressive, Naruto-kun."
As the group rejoined, Naruto, still buzzing from the food and company, scanned the training ground. His eyes stopped on the one person he hadn't spoken to: a girl with red hair, a red so intense it seemed to absorb the sunlight. She kept her distance from the others, silent, watching everyone with a defensive caution that, for some reason, felt painfully familiar to Naruto. Without a second thought, he walked over to her.
"Hey, we haven't been introduced," Naruto said, planting himself in front of her with an easy, open smile.
Before the girl could react, Sakura slid up beside him with a sly smirk.
"Naruto, this is Karin. We found her in the forest during the exam. Karin, this is the idiot we told you about, Naruto Uzumaki."
Sakura's introduction was typically blunt, but it was Hinata's soft, clear voice that added the detail that would change everything.
"She's also an Uzumaki, Naruto-kun."
Naruto's world stopped as if someone had flipped a switch. The sound of Kiba and Shino's argument, the whisper of the wind through the trees, the crunch of Choji's chips... it all faded away. He turned to look at Karin, to really look at her for the first time. The red hair. The eyes hidden behind glasses. But above all, the name: Uzumaki.
"Really?" he whispered at first, as if he didn't dare to believe it. Then reality hit him, and his voice erupted, charged with a joy so pure and unfiltered that it made several of the other genin turn to look. "Another Uzumaki?! That's awesome!"
He completely forgot about Sakura, Hinata, and everyone else. His universe had shrunk to the red-haired girl who was staring back at him, wide-eyed and completely bewildered.
It was as if someone had thrown a rock into a frozen pond. The blood instantly drained from Karin's face. She shrank into herself, making herself smaller, and the small smile that had appeared vanished, replaced by a familiar mask of panic. Her newfound sense of security shattered.
Naruto, initially confused by the sudden hostility, needed only to see the pure terror in Karin's eyes. He turned his head and saw the looks of icy fury that had settled on Sakura's and Hinata's faces. Shikamaru, who had gotten to his feet, was now watching them with cold calculation. Kiba growled under his breath, and Akamaru echoed the sound.
Sakura leaned in toward Naruto, her voice an urgent, sharp whisper in his ear.
"They're her old team. They made her heal them by biting her, Naruto. They treated her like an animal. When a bear attacked them, they abandoned her to be used as bait. They left her for dead."
That was all it took. No more explanation was needed.
Naruto's carefree smile vanished. Without a single word, he took a step forward, physically placing himself between Karin and her former tormentors. There was no dramatic pose, no visible explosion of chakra. He just stood there, an impassable wall of pure will.
"Get out of the way," he said. His voice was dangerously low, devoid of its usual loudness. It was a tone few in Konoha had ever heard him use.
The Grass ninja laughed, though the sound was a bit forced.
"And who's going to make us?" one of them mocked. "Some Konoha clown?"
Zakuya stepped forward, drawing a kunai in a swift motion. "I'll teach you not to stick your nose where it doesn't belong, shorty."
He lunged forward, aiming for Naruto's neck. The fight, if you could even call it that, was insultingly brief.
Zakuya charged with killing intent, but in the instant his arm extended, Naruto was no longer there. With an almost imperceptible movement, a simple pivot on his heel, he had shifted just a few inches to the side. Naruto's hand clamped down on Zakuya's wrist like a vise. There was no hesitation. He twisted the wrist with a controlled, precise force that made the bones crunch. The Grass ninja dropped the kunai with a choked cry of pain and, simultaneously, Naruto's foot swept his supporting leg out from under him.
The ninja fell on his back with a dull, wet thud that knocked all the air from his lungs, leaving him gasping on the ground like a fish out of water.
The second ninja froze in surprise but reacted on instinct. With a flick of his wrist, he sent a flurry of shuriken at Naruto.
Naruto didn't even bother to look at them. Without taking his eyes off the man he had just downed, he raised his left arm. In a single, fluid motion, he used the back of his metal gauntlet to deflect the weapons' trajectories. The shuriken ricocheted with a metallic clang and embedded themselves harmlessly in the trunk of a nearby tree.
Before the Grass ninja could process what had just happened, Naruto was already on him. He closed the distance between them in a single explosive step. He didn't use a jutsu. He didn't use a weapon. He just punched him.
It was a dry, brutally efficient punch. A straight right to the solar plexus. The impact sounded like a melon breaking.
The ninja folded like a puppet whose strings had been cut. His eyes rolled back in his head, and a string of saliva escaped his mouth before he collapsed to the ground, completely unconscious.
Silence.
Naruto turned slowly to face Zakuya, who was stumbling to his feet, clutching his broken wrist. The fear on his face was now plain and pure. All arrogance had evaporated.
"She's one of us now," Naruto said. His voice was still calm, but it carried a steel edge that promised much more pain. "Don't ever come near her again. Don't ever look at her again. Don't ever speak of her again. Got it?"
Terrified, Zakuya could only nod, unable to form words. He scrambled to his feet and fled without looking back, tripping over his own feet like a coward.
On a nearby rooftop, two figures had observed the entire scene in silence.
"Lady Tsunade, aren't you going to intervene?" asked Shizune, whose body had tensed at the start of the confrontation, ready to leap in at any moment.
Tsunade shook her head, a small, almost imperceptible smile of pride gracing her lips.
"No need. Look at how he moves, Shizune. Not a single wasted motion. He's not losing control; he's controlling the fight." She watched as Naruto took down the second ninja with a single blow. "He's defending a friend. Someone from his clan. He's doing exactly what a future leader of this village should be doing."
Her gaze shifted to the red-haired girl, who was staring at Naruto with an expression of absolute astonishment.
"Besides..." Tsunade continued, her voice taking on an analytical tone, "that Uzumaki girl... her chakra is dense, incredibly pure. Perfect for healing. It's a rare talent. Fascinating."
Shizune nodded, her concern easing. "It's true. Her ability to heal is almost instantaneous."
"She could be a first-class medical-nin if properly trained," Tsunade murmured, more to herself than to Shizune. "A true Uzumaki... It's been a long time... well, not counting the brat."
Just as the combat ended, a messenger appeared beside them in a silent flash.
"Lady Tsunade. An urgent message from the hospital. Rock Lee has woken up."
Tsunade nodded, her eyes still on the training ground, where Naruto had turned to offer a hand to a stunned Karin.
"Understood. I'll be there in a moment," she said, her voice firm. "I want to see how this ends."
The messenger bowed and disappeared as silently and quickly as he had arrived.
Down on the field, the tense silence was broken by the sound of footsteps on the grass. Naruto's fury had evaporated as quickly as it had appeared. The icy calm was gone, replaced by a warm, reassuring smile. He approached Karin, who was still standing, paralyzed.
"You okay?" he asked, his tone returning to its usual gentle, slightly goofy self.
Karin could only nod, her eyes fixed on him, filled with a mixture of admiration, gratitude, and confusion she had never felt for anyone before. For the second time in her life, someone had defended her without asking for anything in return. Without expecting her to repay the favor with her blood, with her chakra, or with her body. She felt, for the first time, safe. Protected.
Sakura and Hinata came closer, flanking Karin. Sakura placed a comforting hand on her shoulder.
"Are you okay, Karin? Don't pay any attention to those idiots."
"They won't bother you again," Hinata added, her voice filled with surprising conviction.
They exchanged a look of shared pride over Karin's head. They had not only seen their friend's new, incredible strength, but also his maturity: the protective instinct of a future Hokage.
It was then that Tsunade and Shizune landed softly beside them, barely kicking up a blade of grass. The presence of the legendary Sannin instantly silenced any remaining conversation.
"Good work, brat," Tsunade said, her practical tone hiding the depth of her approval. She gave Naruto a pat on the head that was more like a sharp rap, making him stumble. "You've got your mother's punch."
Naruto rubbed his head, confused but smiling. "You knew my mom?"
"I knew Kushina, yes. She had the same temper as you and an even meaner right hook," Tsunade said with a half-smile. Her gaze swept over the group, pausing for a moment on Karin, who tensed under her scrutiny. Tsunade gave her a wink, an unexpected gesture that threw her completely off balance. "Now, let's go. We have a hero to visit in the hospital."