As a Grey Knight In Naruto

Chapter 61 – "Profit and Purpose"

A few weeks had passed since the implantation of the Sinew Coils.

Hajime's body had stabilized. His muscle spasms were gone, the containment frame had been retired to storage, and his nerves now fired in perfect harmony with the living alloy embedded in his limbs. Every movement was precise. Every step effortless.

But brute strength alone wouldn't build a future.

He stood now in his underground lab, the lights humming gently, powered by the chakra generator tucked into the stone wall. Racks of scrolls and containers lined the shelves. Beside them, rows of prototype tools and invention sketches covered the tables.

It was time to make money.

Not for greed. But for stability. For the future. For Tsunade.

He thought of her often these days. Not just as his mentor, or his Hokage. But as someone who carried the weight of the village alone. Hajime didn't just want to serve her.

He wanted to support her.

To see her smile without the weight of sacrifice in her eyes.

That's why he developed his first two creations.

Healing Tags

Inspired by the battlefield medicae field patches of the Imperium, Hajime crafted simple strips of chakra paper inscribed with soft Yang-oriented healing seals. A drop of his own chakra sealed into each one.

"A medic scroll in your pocket."

Effect: Automatically healed minor wounds, clotted bleeding, or dulled pain when slapped on the skin.

Materials: Paper + chakra ink + drop of Hajime's Yang-infused chakra.

Cost: Extremely cheap, easy to mass-produce.

He imagined every genin squad carrying one. Farmers. Merchants. Children. Even ANBU.

Chakra-Soap Blocks

Modeled after the Mechanicus sterilization foams used by medicae servitors, these compact soap-like bricks released antibacterial chakra when exposed to water or chakra touch.

Effect: Instantly sterilized hands, wounds, or tools.

Use: Healers in the field. Birth attendants in remote villages. Farmers treating animal injuries.

Bonus: By adjusting the resonance, Hajime could make them repel insects and disease vectors.

He could see the practicality already, hygiene improved village-wide would lower medical costs, which meant The Hospital could focus on harder cases.

And that meant less stress on her shoulders.

(Zander: This just some oc btw, I can't find similar technology in warhammer, there are little known Technology, that aren't use for war)

When he presented the designs to Tsunade in her office, he didn't dress them up with speeches. Just facts.

"They're easy to make. Cheap. Safe. I'll teach your medical-nin to reproduce them with standard sealing technique. My only request is a fair split."

Tsunade, arms crossed, blinked at the prototypes spread across her desk.

"Fair split?" she asked, raising a brow.

He nodded. "Thirty percent for me. Seventy for you and the village."

She stared at him for a long moment.

"You could've taken half," she said.

"I know," Hajime replied. "But you'll need the rest."

She didn't say anything for a while. But something in her expression softened. Her gold eyes shimmered faintly, not with tears, but something older. Gratitude. And affection.

She stepped around the desk, standing in front of him. Even on her heels, she barely reached his shoulders now.

"You're always thinking ahead," she muttered, almost to herself.

Hajime shrugged. "I told you I'm not here to make your life harder."

"And what do you want in return?" she asked lightly.

His answer was.

"When the time comes… I'll need your help."

She blinked.

He stepped closer, not intimidating, not dominant, just present.

"And I want you to be there. Not as Hokage. Or as a Teacher. As you."

Tsunade's lips parted, then closed. She looked away for just a second, then back at him.

"…I'll be there."

He nodded once. Then turned to leave.

---

Within days, production had begun. Teams of medical-nin and sealing experts began copying Hajime's instructions, forming scroll workshops and infusing soap molds.

Demand spread faster than expected, especially from smaller border towns and clan merchants.

And though Tsunade handled the logistics and distribution, she always made sure a sealed ledger of royalties made its way to Hajime's lab.

He never opened them.

Not yet.

His eyes were already on the next phase.

---

End of Chapter 61 – "Profit and Purpose