MTL - My Backyard is the Tang Dynasty - Chapter 422 The ultimate weapon!

When Yao Shen, Patriarch of the Heavenly Sky Sect, ascends and regains memories of his past life on Planet Earth, he realizes that he can no longer allow himself to accept the cruel and violent ways of Eliria, the realm of cultivation. So he decides to change it. It was time to found a new sect. One based on the values of honor and equality over senseless violence and discrimination. A sect where all, from the mortal farmer’s son to a sect elder's daughter, were held accountable to the same rules. Welcome to the Modern Sect.

In 1984, the appearance of Sean added another fire to the already chaotic public order in the United States and poured another barrel of oil…

What? You say he’s a source of chaos and a total badass?

you are gone!

Rebirth, Beauty Comprehensive, Coquettish Lawyer, Breaking Bad, Shanzhai, Hollywood, Iron Crotch, Security Group, a comprehensive business empire.

- Description from novelbuddy

After dying prematurely from an incurable disease, Yuka Hikano finds himself in a mysterious realm filled with endless doors, each concealing divine gifts from powerful deities. He is not alone—others who have met the same fate of death stand beside him, unaware of the trials that await.They are put through various tests and eventually transmigrated into different worlds. But these worlds are nothing like the Earth they once knew.For Yuka, however, this apocalyptic world feels eerily familiar. It is a realm of endless war, devastation, and chaos—a world he once played in a game. Certainly not the kind of place one would wish to be reborn into.From infancy to adulthood, he must gather strength, knowledge, and allies to survive the horrors that lurk ahead. But when he awakens a system granting him a power beyond imagination, he soon realizes that blessings can also be curses.[You have gained Infinite Mana.]Infinite Mana...?What could possibly go wrong?