Inside the Cave of Obscenity - Chapter Volume 1 6: Knights 1

A river song, triggered a legend of the rivers and lakes.
Tian Zun’s life motto: “My sword is the truth.”
Shen Lang’s life motto: “To serve people with morality, those who are dissatisfied are dead.”

- Description from uukanshu (translated)

All of a sudden, various watches appeared out of nowhere in different parts of the world. These locations were quickly controlled by various organizations, and then the marketing of the watches was strictly controlled.Why was this? Because these watches gave access to a unique world: Eternity!Eternity functioned more or less like an open-world game with a single-player mode, except that Eternity was a game where you could actually die!By joining Eternity, everyone awakened a unique talent.This talent helped unlock the first classes, which allowed you to strengthen your physique both in Eternity and in the real world!Not to mention the various skills and talents available...And above all, there was the legend that it was possible to become immortal thanks to Eternity!It was with the aim of changing his destiny that Maxime trained his whole life in swordplay, and for many years saved his meagre salary to obtain one of these famous watches!Watch his rise in the real world thanks to Eternity!

In the twilight years of the dynasty, treacherous villains rose to power and demons plagued the world.Qin Zheng, bearing a scroll of virtuous deeds, traveled through time and found that by beheading those wrapped in sin, he could attain virtue and enhance his martial arts prowess.Thus, Qin Zheng glanced at the Ghost Head Greatsword in his hand.“The auspicious moment has come, to the execution!”With a great shout, Qin Zheng swung his blade and beheaded his target!!----------------This book is also known as “I've Become an Executioner After Time Travel?” and “Achieving Sainthood Through Merit, I Seek Elevation by Executing Sinners”......

Joseph Knox, one of the most prolific and well-known serial killers on the planet.A person considered so demented and manic that even trying to reason with him was believed to be a waste of time. A man so far gone that he seemingly didn't deserve any pity even on his deathbed.So why? Why would a man like him receive a second chance? And why did the world around him seem so familiar?Disclaimer: AU when it comes to some parts of Madara's plan(I'll try to make it make sense at least), and aliens don't exist in this world