MTL - Marvel: Start with Summoning the Shadow Troopers - Chapter 83

Yun Woo is the youngest author in history to enter the literature world. His debut work was a massive hit but this success was short lived for the unprepared.

“The True Form Of Order is chaos, It is a tale as old as time itself!”Since Dungeons began appearing around the world, things have changed. The world has evolved, letting dungeons alter the genetics of humans, giving some of them abilities and powers that no ordinary person would have.These abilities were called magic, and the ability to use them or even control them was called having mana. Almost 80% of the world’s population has gotten this ability. When a person who awakens their magic is seen, he or she will be taken for evaluation. To see their strength, there were strong and dangerous warriors who had to be used to keep the dungeon at bay and make sure that nothing happened to the world.Amid all this chaos, Darius Winters, a typical loser trying to make sure he would make enough money to pay for his sister's treatment, joins a guild on a raid. When his life is changed, Darius gains a powerful system, and he can get stronger than he was; the system makes him potentially the strongest warrior in the city.But he chooses to hide from the spotlight and take care of his sister. But how long can he keep up with that? when he is thrown in the middle of a brewing war between divine beings

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

- Description from Novelupdates

After making a deal with a peculiar goddess, Victor awakens in a new world of swords & magic with a body of pure darkness and far too many eyes.

He had become a Netherborne—the strongest undead race in all of existence.

But what happens when a human mind inhabits such a creature? With dulled emotions and an insatiable hunger?

Does only death and destruction await the world? Or will Victor be the herald of a new undead civilization?