One Piece: Fist of the World - Chapter 30: Strength

When Cheng Guang woke up, he realized he had traversed to another world.He had thought his transmigrated identity would be the esteemed Princely Heir to the Duke, but he hadn’t expected an additional (pseudo-) in front of it.It wasn’t tragic, but it definitely wasn’t great either, it was just very helpless.Cheng Guang had thought that being able to be a pseudo-Princely Heir was the biggest cheat in his life, but to his surprise, he was also bound to a system.This system was even more of a scam!It seemed to have bound him three thousand years too early!It started by telling him he had advanced to the Heavenly Human Realm and instructed him to confront the Empress of Great Zhou, who was also in the Heavenly Human Realm.But he was just a small potato!However, wait a second, the Empress of Great Zhou, years later, seems to be just a pushover right now?Cheng Guang became resolute and confident again, I got this!!!

Hace 24 años, el mundo colapsó. Un virus conocido como Eclipse transformó a la humanidad en criaturas mutantes, llevando a la sociedad al borde de la extinción. Las ciudades se convirtieron en ruinas, los asentamientos luchan por sobrevivir, y la verdad sobre el origen de la infección se ha perdido en el tiempo.En este mundo roto, Kai, un viajero solitario y mercenario de intercambio, sobrevive negociando Obsidianos, la única moneda de valor en la nueva era. Su vida cambia cuando cruza caminos con Lía, una misteriosa joven perseguida por mercenarios. Su única posesión es un antiguo colgante de Obsidiano, cuyo secreto podría cambiar el destino del mundo.Juntos, se ven envueltos en una conspiración que los lleva hasta el Laberinto Ancestral, un lugar prohibido que esconde la verdad sobre el Eclipse. Perseguidos por un ejército liderado por el despiadado Voss, enfrentándose a infectados más allá de la comprensión humana y descubriendo que su pasado está conectado al desastre, Kai y Lía deberán decidir si la verdad merece ser revelada… o si es mejor que permanezca enterrada.Cuando la última puerta del Laberinto se abre y los ecos del pasado despiertan, solo una pregunta queda en el aire:¿Es el Eclipse el fin de la humanidad… o su evolución?

In the territory of Zhao State, there are Liuxuanmen of the martial arts sect of Jianghu.

Su Yu became a handyman disciple who was just getting started.

Having obtained the sign-in system, he signs in at different places every day, and there will be various rewards.

Sign in at the center of the training ground and get the reward [Jiuyang Zhenjing]!

Sign in on the cliff near the residence of the handyman disciple and get the reward [Millennium Snow Lotus]!

Sign in in front of the sect library and get the reward [Lingbo Weibu]!

…

In this way, it was not until decades later that Su Yu discovered that he seemed to have surpassed the peak of martial arts and reached the level of cultivating immortals before he knew it…

Ninety-eight years later, a martial arts devil who was born out of nowhere made waves in the territory of Zhao, and no one in the martial arts world was his opponent.

Until this day, the martial arts devil killed Liuxuanmen and met Su Yu who was sitting outside the library, basking in the sun on a rocking chair…

- Description from novelbuddy

What happens when a man gets transported into a foreign world filled with magic?