MTL - Naruto Lineage Theory? Trash - Chapter 215

Tom cloned another self based on himself.Then he found that he could connect the clone's brain with his consciousness.With each clone, he would have one more body and one more brain. His memory, learning ability, action ability, engineering ability, etc. would be doubled accordingly.Facing the vast sea of stars after the inexplicable disappearance of human civilization, Tom had no fear in his heart.“Although I am the only one left in human civilization, there are countless 'me'...”

A martial art expert from the Song dynasty lives like a Phoenix that can live again in another body after death. This time, he happened to take over the body of a Japanese high schooler who is also a victim of bullying and has a bit complicated family circumstances.

- Description from Novelupdates

Bai Chuan has a particularly powerful ability, he can take apart everything in the world as a model and choose the best ability structure to give to himself.

If he was born in a mythical world, given him a period of time, he would be able to overthrow the heavens and the world, become an immortal and become an ancestor.

If he was born in a world with extraordinary monsters and beasts, given him a period of time, he could also become the strongest beast, called invincible and immortal.

It’s a pity…he was born in an ordinary world of low martial arts.

“The water in this world is too shallow to raise real dragons…” He looked at the sky and muttered to himself.

Since real dragons cannot be raised in shallow water, wouldn’t it be better to make the pond deeper?

- Description from novelbuddy

Just like how everyone adored heroes in their childhood, a certain young man adored those powers hidden in shadows. After hiding his strength and living the mediocre life of a mob character by day while undergoing frenzied training by night, he finally reincarnates into a different world and gains ultimate power. The young man who is only playing at being a power in the shadows, his misunderstanding subordinates, and a giant organization in the shadows that gets trampled…. This is the story of a young boy who had adored powers in shadows possibly eventually reigning over the world of shadows in another world.