Stop Messing Around, Mr Bo! - Chapter 24

Our protagonist was a Mexican who died on a flight, when he woke up he found Apollo who reincarnated him as the grandson of Gaius Octavian Turino (Augustus) the first Roman emperor, having a mission in hand to conquer the New World to save the Roman polytheist world and his existence.

In the morgue full of Uchiha corpses, he opened his eyes…

A mysterious voice rang in my ear…

He looked confused: “Saving the ninja world, what’s the matter with me, the remnants of Uchiha?”

- Description from novelbuddy

A man was transported to Ancient China and eventually became a servant of a declining household without a male heir. He utilized his wits and modern knowledge to help the household and eventually become trapped in the sea of political turmoils of the period.

- Description from Novelupdates

[By the Author that brought you “Martial God Regressed to Level 2”]The Swordmaster, who unified the continent and vanquished the Demon King with nothing but his sword, thought he would live out his days peacefully in a world of tranquility.One day, however, he awakens 1,000 years later in the body of a distant descendant.In a world where magic is now held in higher regard than the sword, the empire has crumbled, and the imperial lineage has fallen into ruin.“More importantly, what is this pathetic excuse for a body?”He now inhabits the body of Kaylen, once known as a “walking slime”.With the demonic realm invading once again, he makes a vow:“Since I’ve mastered the sword, I might as well master magic too.”Thus begins the return of a transcendent being, armed with unparalleled magic and absolute swordsmanship, destined to save the world!