Naruto: Starting a Long Life as a Konoha Ninja

"Sensei, does the Sage of Six Paths really exist?"

"Can a ninja become a sage?"

Tsunade, with her golden twin ponytails, smiled as she looked at her newly graduated disciple, who was asking the questions with such seriousness. She sighed inwardly.

"He's still just a child after all."

...

"The human body's lifespan is simply too short!"

"Even the Hokage will eventually meet their end."

"Shun, you're the only one in the village who can understand me!"

Having chosen to defect from the village in his pursuit of the truth, Orochimaru looked at the young junior who had tracked him down and continued to tempt him. A fanatical expression gradually appeared on his face.

...

"Shun, a ninja is someone who knows how to endure."

"As for the shinobi world, the Child of Destiny will eventually change everything!"

Jiraiya knelt in the rain and let out a painful roar. He could not believe that the successor of the Will of Fire would ultimately walk down the

"wrong path."

...

Under the blood-red moonlight, Furukawa Shun looked at the Truth-Seeking Orb changing forms in his left hand, then at the Chakra Fruit he had painstakingly 【collected】 in his right hand. He smiled in relief.

"...Immortality begins now..."

-Furukawa Shun, who had unexpectedly arrived in the world of ninjas, initially only wanted to live a little longer.

Yet, on his journey to pursue immortality, he would ultimately change the entire world.
And this was only the beginning.