Sword Art Online - Vol 6 Chapter 9

A black pearl brought Jiang Feng from a doomsday stage where top masters with one emperor, two emperors, three emperors, four deities, and seven peerless cities show off their glory to parallel time and space, and this time and space-the end of the world has not yet opened! !! Under the sky, the youth look up, if I have strength, can I get through … these two time and space! !!

- Description from 69shu

Ezekiel recognized early in life that he didn't want to follow in his parent's footsteps and spend the rest of his days as a mere farmer. No, his eyes are set on a grander stage, a place where tales of monster hunters, mighty generals, and benevolent heroes hold court — A world of Magic and mysteries.One day, the opportunity he had been waiting for arrives. Without a second thought, Ezekiel throws himself headfirst into the adventure. However, not everything turns out to be as magical as he had dreamt it to be...THIS IS A SLOW BURN FANTASY PROGRESSION LITRPG STORY:Even though you are not going to see blue boxes from chapter one, I guarantee you that this IS a LitRPG story. This is, however, NOT a pure “game world”! Instead, I have tried to integrate the interface elements of a LitRPG into a world with a very thought-out magic & power system, which will be explored over the course of the first book.This world doesn't work like a game, where you can put '5 points in strength' and the body somehow changes magically into a stronger version of itself. It might take a couple of chapters for the world and magic to start to make sense, but I feel like a power system built on solid principles is a lot more rewarding in the long run (...and more IMMERSIVE!).

[WELCOME TO THE VILLAINOUS LUST SYSTEM] [YOU HAVE 0 LUST POINTS] [YOUR FIRST VILLAIN MISSION IS…] Bo is a lowlife who has an accident as he rushes out of the apartment of the married woman he’s screwing (her husband came back) He wakes up as a farmboy named Levi in the villainous lust system, a platform that promises to make him stronger if he can be a degenerate. Now by performing sexual acts, he can increase his strength and become the greatest ever mage! Yes, this book contains what you think it does, you dirty pervert. in fact it contains plenty of it (it’s a lust system after all)

In this world, orphans or just anyone without any hope for this world can apply to become a “walking target”. Their sole purpose is to be a practicing dummy for the students of the sect who train to become “Demon Hunters”. These students need “walking targets” to test their training on living, walking beings of flesh and blood.
In exchange, they will be provided with food & shelter.
Their existence value is lower than a slave, but if they manage to survive a few years they can receive a life long pension.

Xiao Han is such a “walking target”. One time he witnessed a powerful Demon Hunter disposing a demon. When the demon died, a fragment of the demon that managed to escape entered Xiao Han’s heart. No one saw that, and even Xiao Han himself only felt some discomfort for an instant.

But that thing in his heart soon gave Xiao Han visions, and the first one is of a cultivation method which allows Xiao Han to absorb damage to enhance his body. A perfect cultivation method for a “walking target”.

- Description from Novelupdates