The King of Faries is now a Demon Lord - Chapter 24: Opening

Travel to the world of One Piece?

They come, the security;

Became Don Quixote Rossindi?

Forget it, it can’t be reopened;

But after realizing that he had eaten the fruit of silence, the little boy became restless.

Fruit of Silence, this is one of the devil fruits that can compete for the title of “the most useless” in the world of One Piece; it is only a little better than Chopper’s “Everyone’s Fruit · Common People’s Form”!

“Dover, you said you are a devil fruit wholesaler, why do your family eat all kinds of weird ones?”

Facing the bewildered little Dover, Rossindi patted his forehead.

“Forget it, let’s practice domineering hard.”

- Description from novelbuddy

I was reborn into a chaebol family.Into a time with no cryptocurrency, no internet, and nothing else.

[DING! Congratulations to the Host for obtaining SSS-Rank Dark Dimensional Reality Talent][Attribute: Darkness]Freed from nuclear war terrors, all humans now have to face the new reality of their fate.Humans are given a power that allows them to have different talents according to their abilities and luck, including obtaining the power of past heroes.Aaron Lewis, an 18-year-old young man, must bear the devastating reality that his mother was killed by an unknown group. The turmoil of uncontrollable rage in his heart makes his talent affected.[WARNING!][System detected Darkness attribute energy increase][Initiates talent rank evolution][Adjusting talents with attributes ][Evolution Completed]Just as Aaron opened his eyes, he saw he was floating in a void dimension with thousands of caged ancestral souls waiting to be freed or summoned. They are the souls of heroes from all over the world.[Main Talent: Dark Dimensional Reality][Rank: SSS-Rank]With his flexibility to explore dimensions beyond ordinary human sight, Aaron gathered thousands of ancestral souls and turned them into his army.To his surprise, Aaron found a way to free his mother's soul and bring her back to life, which was to become a Great Ruler.“There is no other choice. I will become a Ruler.”

A man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his rigorous discipline, in order to reach his goal: Resume his career as a teacher which he left halfway through in his previous life. This is the story of a man, who, based on the memories and the experiences of his previous life, became a teacher who travels through the world with his students.