I Love Destroying Worlds' Plot - Chapter 11 - 1.10 First Small Star – End Of The Slag Couple

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

Synopsis below:How did the Avatar universe change when a transmigrant appeared in an unknown village, long before the canonical events? And how are the two islands Kyoshi Island and Uzushiogakure no Sato (A village hidden in the maelstrom)?---Tags: AU, Before-canon, Post-canon, Violence, Death of major characters, Transmigration, Harem, Children, Incest, Romantic. Foul language.

Ryo Tanaka, a struggling college student, works tirelessly at multiple part-time jobs to make ends meet. In a bid to earn some extra cash, he volunteers for a paid drug research study, unaware that it will alter the course of his life forever.The experiment takes a disastrous turn, leaving Ryo bedridden with a high fever for several days. But when he finally awakens, he finds himself in a world plunged into chaos. A deadly virus has ravaged the city, turning its inhabitants into ravenous, flesh-eating zombies. Streets once bustling with life now lay desolate, the remnants of civilization crumbling under the weight of the apocalypse.

what will happen in advanceThe Empire will fracture, the princes will rebel, and the world will be in chaos!And his tribe will be annihilated and his people will be killed and enslaved!This is not a good era to live.In this chaotic era, the only way to survive is to fight!In blood and fire, he will be baptized into an Overlord that would shake the world![ The character also has a system that will help him to navigate this new world. Enjoy as he begun building a new kingdom in a chaotic world]