MTL - Bringing the Supermarket to the Apocalypse - Chapter 530

The older young Lisko woke up and found that he had become an American. He took over his father’s ranch and began to live in the United States.

- Description from novelbuddy

Instead of struggling meaninglessly, he acknowledged his place.

My name is Joo In-gong. The name that my parents gave me meant ‘protagonist’ of the world. Really?

Zero, a 35-year-old mercenary, after being betrayed by one of his teammates who told his enemy about him. He chooses suicide so that he can kill his enemy and his traitor teammate. After that, he was reincarnated into the world of magic, in the body of an 18-year-old teenager with the same name as him. However, his body does not have mana or the talent for magic. But with the help of the cultivation system, he has unrivaled power in the world and has a harem of beautiful wives.