MTL - Master of Ninja World - v15 Chapter 1373 it has started

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

This world became a playground for various other worlds. Every living creature was digitized and awaited the endless slaughter and torture of the players from other worlds.Yi Zheng, who had become a mob rabbit in the Beginner's Village, decided to lead a group of rabbits. They sprinted across the grasslands, did crunches, bench-presses, rowing, and swimming etc.A year later, when the players descended, they saw more than just a group of small monsters.They saw an army of terrifying, demonic, muscular rabbits!The Rabbit King sitting on the throne high above waved a carrot as he threatened, “From this day forth, don’t even think of leaving Beginner's Village!”

Roan transmigrated as an FBI investigator.Several years later, a journalist interviewed the world-renowned detective Roan Greenwood and asked,“What made you persist in solving cases for so many years?”Roan tilted his head and glanced at the sports car beside him, the villa behind him, and the beautiful woman inside the villa. He smiled slightly and said,“Well, the bonus after solving the case.”“What?”