The Retired Young Mercenary Is Secretly a Billionaire - Chapter 19: The Blood That Stays

A social worker father and his adult daughter crash land on a desert full of crystal plants and little else. The city walls of Ar'Kendrithyst rise in the distance, but as the pair hike closer they see those walls are more like mountains, and the mega-metropolis is long dead. Luckily, the adventuring city of Spur is alive and green and hospitable, and well outside of Ar’Kendrithyst’s shadow.Follow Erick Flatt as he tries to make a nice life with new friends in a new home with his daughter at his side, but this land is rarely as kind as its people, and Erick will need to change if he wants to live the life he wishes to live. What to expect:Slow burn storyline, worldbuilding, father-daughter relationship, Erick is the MC, Jane is the side character, slice of life, numbers in blue boxes but also high fantasy, trying to understand magic, creating new magic, living the easy life but forced into dealing with problems, problems becoming very large, massive changes, traumatizing content, and most of all: character growth.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Strong? Handsome? Savage? Badass?It's all about the intelligence quotient, my friend.————PS: Mutation shouldn't be mistaken for enlightenment.

He never performed well in either middle nor high school, and even after becoming an adult, he never worked. Be it morning, noon or night, he only played an online game. For him, being the world’s number one rank, playing that online game, was his very reason for living.

One day, his account was hacked and his character deleted. Restoration was impossible. Nothing that could be done. The number 1 rank that he literally spent his life to attain and to defend was now lost. Filled with despair, he turned to suicide.

When he opened his eyes again, there was the online game. No, the world itself looked similar to the game. He had been reborn as the extra character of the premium avatar he created in the past, but left untouched.

The former world’s top, was reborn in a world that looked like that online game. That was the beginning of his extraordinary legend.

A knight, a cat, a dark elf, and so on. Together with several unique companions, his training to regain his “world’s first rank” now begins.