Naruto: You Call This A Medical Ninja?

Ōtsutsuki Urashiki, who initially harbored thoughts of resistance, found his resolve wavering when he looked into Reiki's eyes.

The power radiating from those eyes left no room for negotiation.

With a soft grunt, Urashiki plunged his hand into his chest. A violent surge of chakra erupted from him, causing the surrounding air to tremble.

In Uchiha Shisui's mind, a voice echoed, commanding:

"Ninja, extend your hand!"

Startled, Shisui glanced at Reiki. "He's asking me to hold out my hand. Should I...?"

Reiki nodded reassuringly. "Do as he says. Don't worry—I'm here."

Though unfamiliar with the specifics of Ōtsutsuki contracts, Reiki was well aware of the risks. If the chakra from Urashiki integrated into Shisui's body, it could manifest as an unstable, self-aware force, capable of rebelling against its host—a far greater danger than even a tailed beast.

But Reiki's confidence in himself—and in Shisui—remained unshaken.

Shisui extended his hand. A stream of immense energy poured into his body, radiating from his palm as a diamond-shaped symbol took form. A curse mark began to creep up his arm, spreading slowly but surely.

"Ah!" Shisui gasped, clutching his arm as discomfort coursed through him.

Despite the pain, Shisui stood firm. He trusted Reiki implicitly.

The chakra surrounding Shisui grew so intense that it spilled outward, its force creating waves of energy in the air. In the silence, the steady sound of two heartbeats echoed—one Shisui's and the other foreign.

The ninjas watching from a distance held their breath.

Though they had managed to beat Urashiki into submission over the past six days, they all knew how dangerous the Ōtsutsuki clan was.

Could this sealing method truly work?

Would it hold without catastrophic consequences?

The history of jinchūriki bore grim warnings. When tailed beasts were sealed without suitable hosts, entire villages had suffered.

Now, they were attempting to seal an Ōtsutsuki—a being far more dangerous—into a human host.

"Is this going to work?" Jiraiya asked, his face etched with concern.

"I trust Reiki," Tsunade said firmly. "And Shisui does too. That's enough for me."

Around them, the ninjas murmured quietly. Despite their worries, many were eager to witness this moment in history—the taming of an Ōtsutsuki.

Naruto and Sasuke, standing at a distance, watched intently.

"This is Brother Shisui," Sasuke murmured. "I've barely seen him in the village. He's always away, chasing enemies..."

"Probably because of this," Naruto guessed. "Teacher must have succeeded. After mastering the power of the Ōtsutsuki, Shisui must've used it to fight them."

Reiki overheard their conversation and smirked slightly. Their confidence in him only reinforced his own.

Reiki approached Shisui, his tone calm but carrying an edge of lethal intent.

"I said there's no need to test my patience. If you want to die, keep struggling."

His words, though soft, cut through the air like a blade. The murderous intent directed at Urashiki was palpable.

Immediately, the chakra spilling from Shisui's body retracted. The curse mark on his arm receded into his palm, leaving behind only the diamond-shaped symbol.

Shisui relaxed his grip on his arm and raised his hand, gazing at the symbol with a mixture of awe and uncertainty.

"It's done," Shisui murmured.

Reiki placed a steadying hand on his shoulder. "Rest now. You've earned it. Leave the rest to me."

Shisui nodded weakly before collapsing into sleep, the strain of the process overwhelming him. Reiki gently caught him, lifting him effortlessly.

Addressing the crowd, Reiki announced, "The battle is over. We've won. Rest for now, and in two days, we'll gather to debrief and reflect on the fight."

With that, Reiki vanished with Shisui.

Within Reiki's World

Reiki brought Shisui, Naruto, and Sasuke into his personal dimension, a realm of tranquil energy and boundless space.

"I'm going to speak with Ōtsutsuki Urashiki now," Reiki said, placing Shisui in a bed-like structure infused with soothing chakra. "If you're interested, stay and listen. If not, you're free to return."

Naruto's eyes lit up with excitement. "Teacher, we want to stay! This is too important to miss!"

"This is a once-in-a-lifetime moment," Sasuke agreed with a nod.

Reiki chuckled. "Alright, then. Stay close and don't interfere."

Reiki turned toward Shisui, where the essence of Urashiki now resided. His gaze hardened as he prepared to confront the subdued Ōtsutsuki.

"Let's see what secrets you're hiding, Urashiki," he murmured, a quiet intensity in his voice.

Naruto and Sasuke watched in awe, knowing they were about to witness another pivotal moment in the unfolding history of the ninja world.