Mated at First Sight - Chapter 307 - 230: Rival in Love Encounter (One more)_2

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

A millennium had passed, and everything had lost its meaning in his eyes. Many heroes emerged from generation to generation, but he stood the test of time. That was his life, waiting for someone to come along and defeat him, but no one did. Nobody dared. Nobody tried.How can he allow this to happen? With the aid of his magic, he rose from his throne and set out into another world in search of excitement and, perhaps, a worthwhile adventure.What would happen if this last boss decided to venture into the human world for fun?