Where Konoha used to be, now was a big city. More than two hundred years have passed since the fourth great shinobi war, the world has developed so much that shinobi ceased to matter.  A boy of sixteen was walking through town, with short blond hair, two mustache marks on his cheeks, a scar over his eye.  The blond man entered a place resembling a cemetery.  The teenager stood in front of a large monument on which were written the names:

Naruto Uzumaki, Hinata Uzumaki, Himawari Uzumaki, Sasuke Uchiha ,Sakura Uchiha, Sarada Uchiha, Hanabi Hyuuga, Konohamaru Sarutobi, Shikamaru Nara, Mitsuki, Shikadai Nara, Inojin Yamanaka and many others

The teenager touched the statue and tears appeared in his eyes  "Cursed Otsutsuki!"

(Retrospection)

In an unknown dimension, Boruto and Kawaki faced the God Otsutsuki called Shibai

"Kage Bushin No Jutsu!"  the blond man created a dozen of his clones, which he sent to the enemy

Kawaki created several huge cubes and threw them at Shibai.  God Otsutsuki easily destroyed Boruto's clones before sticking his hand up to stop Kawaki's ankles.  At that moment, Boruto teleported in front of him cutting off his arm, Kawaki appeared from the other side and threw Shibai away with a punch to the face.

"It's time to finally end this"  Boruto put his hand towards the opponent, forming a Rasengan in it, with his other hand he grabbed his wrist  "Raserendo!"  A blue beam of chakra shot out

Shibai didn't have time to react when the attack hit him and completely destroyed him.  Before Shibai's body disintegrated, he and Boruto found themselves in a different place for a moment

"I did not expect that some mortal could defeat me, as a reward for defeating me, I will give you eternal life and immortality"

"What, I don't want it!  Give me back my normal life"

Shibai just laughed before he disappeared, and since then Boruto hasn't aged at all and was forced to watch his family and friends grow old and die before his eyes.

(Flashback End)

"I must finally accept the fact that I am the last living shinobi"  he thought as he left

Walking through the city, Boruto went to where his apartment used to be, now there was a neighborhood.

"Everything has changed, they even demolished the Hokage Mountain.  It's time to continue your journey"