Naruto System in One Piece - Chapter 500: Akatsuki

The end of all worlds approaches.

The Demon King Order harvests lives from all manners of living beings.

Within this darkness full of despair,
A single person escaped from space-time, returned to before the world collapsed, determined to change the fate of the past.

But as time pass, he gradually finds out that the Apocalypse isn’t quite as simple as he thinks…

Originally born from a wealthy family, she ends up leading a vagrant life for fifteen years. However, when she is eventually found by her family, she falls into another devious plot and eventually dies tragically.

It all started when the protagonist downloaded a game called “The Fool (Beta Version),” marking a pivotal shift in the style of his life. This was no ordinary game; it lacked visuals and music, composed solely of lines of text and a multitude of choices. Yet, each decision within the game had the power to alter the player's destiny, for on the other side of the game lay a real, unknown world.Players were unable to physically enter this otherworld or see its landscapes, experiencing the alternate realm solely through text, vicariously living each step of their character's journey.As the game progressed, not only could rewards from the game materialize in the real world, but creatures from the game began to appear in reality as well.Then came the day the game was released for global public testing.An era quietly unfolded, where the masses embarked on explorations and treasure hunts in an alternate universe through 'textual adventure,' heralding a new chapter of engagement and discovery.

The dawn era after the end of the half century has gradually rebuilt the order, abandoned civilization, and is full of undivided violence and desire.
The noble and powerful pioneers are in charge of the city, and the evil and mad plagues are in the wilderness.
Pure human beings who cannot mutate are the weakest, dominated by the rulers of the pioneers, and are not as good as animals in the wilderness.
A purely humanized young man with a worldly experience has quietly entered the WTO, holding a three-foot long knife and a long-distance desire to boil in the world of purgatory. From the nameless name to the sorrow of the Supreme Court, the name of the black ride is resounding!

- Description from Uukanshu (translated)