The sound was a dull, wet pop, followed by a cry of frustration.
"Damn it!"
Naruto fell back onto the grass, soaked once again by the water from a rubber ball that had refused to cooperate. Beside him, his shadow clone dissipated in a puff of smoke. The morning sun had barely begun to warm the air, but he was already covered in sweat, water, and dirt from his repeated failures. The skin on his left hand, the healthy one, was red and raw from the effort.
Shizune, watching from the porch with a steaming cup of tea in her hands, sighed. She had been watching him try and fail for two hours. The boy's stubbornness was a force of nature.
"Naruto-kun, maybe you should take a break," she suggested softly. "Overexerting yourself will only waste your chakra."
"I can't!" he shot back without looking at her, already reaching for another rubber ball from the basket. "I'm so close, I can feel it! This time for sure, believe it!"
Just as he was about to try again, the sliding door to the inn opened. It wasn't Tsunade. It was the receptionist, a middle-aged man impeccably dressed in a formal kimono, his usually serene face pale and covered in sweat. He bowed deeply, avoiding eye contact.
"Shizune-sama… Lady Tsunade…" his voice was a tense, urgent whisper. "You have visitors in the lobby. They insist on seeing her. They say it's an urgent business matter that cannot be postponed."
The formality and fear in the man's voice immediately caught Naruto's attention. He stopped his training, the rubber ball forgotten in his hand. These weren't friends or admirers. Shizune stood up instantly, her expression turning serious.
"Who are they? Did they give their names?"
"No, Shizune-sama," the man replied, without looking up. "But their… presence. They are not ordinary merchants."
****
The lobby of the luxurious inn was a sanctuary of silence and good taste. Dark wood panels, minimalist flower arrangements, and the soft murmur of a small fountain created a calm atmosphere. A calm that was shattered the moment Tsunade, Shizune, and Naruto came down the grand staircase.
Sitting on the cream-colored silk sofas as if they owned the place were three individuals. They weren't thugs. They were businessmen.
The one who appeared to be the leader was an older man, around sixty, with impeccably slicked-back gray hair and a dark suit so perfectly tailored it must have cost more than Naruto had ever seen in his life. He wore a polite smile that didn't reach his cold, calculating eyes. Beside him, two younger "assistants" stood motionless. They also wore immaculate suits, and their stillness, the way their hands rested at their sides without a single unnecessary movement, betrayed a training that had nothing to do with finance. They were shinobi.
Tsunade, who had shuffled out of her room in a foul mood, stopped on the last step. Her face, usually marked by boredom or irritation, became a cold mask. She recognized the man. Gengo. A black-market lender known for his cruelty and relentless methods.
The leader stood and gave a flawless bow.
"Lady Tsunade, a pleasure to see you. I apologize for interrupting your rest, but the terms of your agreement with our employer have expired. We are here to facilitate the final transaction."
His voice was soft and polite, but every syllable carried a threat.
Tsunade stepped off the last stair, her presence filling the lobby. She tried to maintain her composure, her pride wounded by the humiliation of being exposed like this, especially in front of Naruto.
"I don't have the money right now, Gengo," she said, her voice flat. "I need more time."
"Time, as you well know, is the most expensive luxury of all," Gengo replied, his smile unwavering. "And I'm afraid your line of credit has reached its end."
Shizune stepped forward.
"Please, Gengo-san. Lady Tsunade is one of the Sannin. Her word is her bond. If she says she will pay…"
"Her word has been her bond for the last six months, Shizune-san," he interrupted with cold courtesy. "And for six months, our employer has received only promises. Patience, unfortunately, is not a virtue in our business."
The situation reached a stalemate. The air was so tense it felt like it could shatter. Naruto, who had been watching silently from behind, saw the look on Tsunade's face. It wasn't fear. It was shame. A deep, bitter shame.
"However," Gengo continued, his tone growing even softer, more dangerous, "our employer is a reasonable man. He understands that liquid assets are sometimes unavailable. Alternative arrangements can always be made. A shinobi of your caliber, and a medical-nin as promising as your apprentice… your skills have an incalculable value in certain markets. A long-term collaboration could settle all your debts. Permanently."
The threat was clear: indentured servitude.
"Excuse me," Naruto's clear, childish voice cut through the tension. "How much did you say she owes?"
Gengo turned to him, an amused eyebrow raised. He looked the boy up and down: the bright orange clothes, the arm in a sling, the expression of naive curiosity.
"A figure well above a genin's pay grade, young man. Don't concern yourself with adult matters."
"Naruto, stay out of this!" Tsunade ordered, her voice tight with humiliation.
Naruto ignored her and addressed Gengo directly.
"Well, you see, my master sometimes forgets how much money she has," he said with a carefree grin. "She's very scatterbrained."
Before anyone could react, he stepped forward and dropped the heavy cloth bag from the casino onto the mahogany coffee table. The sound of the money spilling out—the clinking of gold chips and the rustle of bundled bills—silenced the entire lobby.
"I think this should be enough," Naruto said, his tone now serious. "Count the change if you want. Now, leave my master alone."
Gengo stared at the pile of money, his polite smile finally faltering. His two assistants exchanged a look of disbelief.
Tsunade was frozen. The shame was so overwhelming she could barely breathe. This kid. This orphan who had nothing. This idiotic, loud-mouthed brat. He was paying her debts. He was saving her. Her, a Sannin. The granddaughter of the First Hokage.
Pathetic, she thought. The word was a silent scream in her mind. I'm pathetic.
Gengo, surprised but pragmatic, regained his composure. A genuine, triumphant smile spread across his face.
"It seems you've found a very generous sponsor, Lady Tsunade. It has been a pleasure."
He ordered his men to collect the money. As they did, he gave one last bow, his cold eyes fixed on her.
"We look forward to doing business with you again in the future."
He turned to leave. It was the trigger.
Tsunade's shame transformed into uncontainable rage. The humiliation of being saved by a child, the anger at herself for her weakness, and the fury toward these men who dared to look at her with pity… it all exploded.
Just as Gengo walked past her, Tsunade's hand clamped down on his shoulder. The sound of dislocating bone was sharp and brutal. Gengo let out a choked cry.
"You've forgotten the first rule of business, Gengo," Tsunade said, her voice a threatening whisper. "Never disrespect a Senju."
The assistant on the right lunged, his hand reaching for a kunai. He never made it. Tsunade's fist slammed into his stomach. It wasn't a chakra-infused blow; it was pure physical strength. The man flew backward, shattering a lacquer table and crashing against the wall, where he slid to the floor, unconscious.
The other assistant managed to draw a kodachi. The blade flashed. Tsunade didn't even look at him. Her leg snapped up in a rising kick that connected with the man's wrist. The kodachi flew from his grasp and embedded itself in the ceiling. Another kick, this time to the chin, lifted him off his feet and knocked him out.
The expensive lobby furniture was in ruins. The hotel employees were hiding behind the counter, terrified.
Tsunade dragged the groaning leader, Gengo, to the main entrance and kicked the door open. She threw him into the street like a sack of trash. Then, she grabbed the rest of the money from the table, walked outside, and threw it on top of him before addressing the terrified employees.
"Call for the trash collectors."
She closed the door. She stood with her back to Naruto and Shizune, her chest heaving with contained fury. The silence returned, heavier than before.
Naruto said nothing about the fight. He simply picked up the rubber ball he had left in a corner.
"Thanks for the lesson earlier, Grandma Tsunade. I think I get it now."
He walked out to the courtyard. Tsunade and Shizune followed in silence. The fight hadn't purged Tsunade's shame, only her anger. Now she needed to see something; she needed the boy's sacrifice to mean something.
Naruto sat in the center of the courtyard. He placed the ball in the palm of his left hand. He didn't summon a clone.
He closed his eyes. The image of Tsunade fighting not an enemy, but her own humiliation, gave him the key he'd been missing. It wasn't about power. It was about control. About will.
Chakra flowed from his palm in a controlled stream, already forming a rotational movement from its source. The rubber ball vibrated. Its surface grew taut. The air around it began to swirl, lifting small leaves from the ground.
It was unstable, trembling, but Naruto didn't fight it. He accepted it. He guided it. The calm he felt, the certainty of his purpose, transferred to his chakra.
With a final cry of concentration that came from the depths of his soul, Naruto injected maximum power into the rotation.
A perfect sphere of pure, swirling chakra formed in his palm. It shone with an intense blue light that illuminated the courtyard, reflecting in the astonished eyes of Tsunade and Shizune. The sound wasn't an explosion, but a sharp, piercing hum.
The Rasengan.
He held it for five eternal seconds before the energy dissipated, leaving him breathless, on his knees, completely exhausted but with a smile of absolute triumph.
Shizune ran to him, her eyes filled with tears of pride.
"Naruto-kun! You did it!"
Tsunade approached slowly and knelt in front of him. The mask of cynicism and rage had vanished. In her amber eyes, for the first time, was genuine respect.
"You did it, you little brat," she said, her voice soft. "You won the bet."
Naruto looked up, panting, but with a radiant smile.
"Does that mean…?"
"Yeah," she replied, a genuine, though weary, smile forming on her face. "Starting today, you're my student. Your friend Sakura, too. The real training begins tomorrow. And it's going to be hell."
The atmosphere was one of celebration and relief. Shizune was crying with happiness, hugging Tonton. Naruto, despite his exhaustion, was euphoric.
"I knew it! I knew you could do it!" Shizune exclaimed.
"Don't get too excited. The real work starts now," Tsunade said, but her tone was light, almost playful. "But a bet's a bet. This is yours, too."
She removed the First Hokage's necklace from her neck. The blue-green crystal, said to be worth three mountains, shimmered in the moonlight. She held it out to Naruto.
In that moment, she remembered Nawaki. His smile full of dreams, his promise to become Hokage. She saw the same dream, the same unbreakable will, in the blue eyes of the boy before her.
Naruto reached out to take it. The necklace settled in his palm, its crystal glowing with a warm, serene light. It felt heavy, laden with history.
"Thank you, Grandma Tsunade," he said, his voice filled with genuine awe.
Tsunade looked at him, and for an instant, her expression hardened, the joy of the moment replaced by a firm resolve.
"Great. Now that I'm your student, let's go back to Konoha," Naruto said. "I've gotta show this to Sakura-chan and everyone else!"
"Not yet," Tsunade replied, her face growing serious, thoughtful. "You've mastered the jutsu, yes. But you don't understand its true nature. The Rasengan isn't just a technique of destruction."
She reached out and placed her hand over Naruto's, where the energy of the recently dissipated Rasengan still vibrated. She channeled her own pale green medical chakra into his palm. He felt a warmth spread from his hand to his injured shoulder.
"Chakra can destroy, or it can create," she said, her voice now that of a teacher. "The Fourth Hokage created a technique of perfect rotation and power. He was a genius. But his true legacy wasn't the power to destroy a mountain, brat. It was the power to protect it."
She removed her hand.
"Your next lesson won't be in Konoha. It'll be here. I'm going to teach you to control that swirl. I'm going to teach you to infuse it with your own will, your own purpose. When you understand that—when your Rasengan is not just a weapon, but an extension of your desire to protect… then, and only then, will we be ready to go back. I will teach you what it truly means… to inherit a will."