Kirigakure Gamer : Rise of the mist - Chapter 18: Lifetime opportunity

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

He had crossed into the dark, ruthless Wizard World.Lucien found his system somewhat different from the usual golden finger.System upgrade points? Chip activation?None of these, but rather becoming a role model, transforming into a nurturing breeze:Teaching students knowledge, receiving advanced knowledge in return.Caring for and maintaining students, earning generous rewards.[Your student has mastered the Magic Potion “Kuru's Cough,” congratulations on acquiring the improved formula “Kuru's Cough - Enhanced”!][Your student has mastered witchcraft “Fireball,” congratulations on learning witchcraft “Greater Fireball”!][Your student has successfully crafted the wizard's tool “Pale Mask,” congratulations on acquiring the wizard tool’s manual “Revised Pale Mask”!]Initially, Lucien was resistant.But after experiencing what it was like to teach disciples and outdo them, Lucien felt he had completely transformed into the form of the master system.This thing, isn't it much more useful than something called Cheating Device?

Mu Xiaoke was a fool in his previous life, he and his older brother love Fu Jiayun. He is a little mute who’s a total failure, how could the other person choose him? He shouldn’t have competed with his older brother, or married Rong Yanzhe as a substitute for his older brother, otherwise he wouldn’t have died alone in the wilderness with his corpse never to be found.

God gave him a chance to be reborn. When he returned to his first year in senior high school, he knew that he could not repeat the same mistakes again. He had to stay away from his older brother, Fu Jiayun, and Rong Yanzhe. The person who treated him as a stand-in for his older brother and kept abusing him. This time, he didn’t ask for anything, as long as he could live well.

It just didn’t occur to him that when he kept a respectful distance from those people, they instead came to pester him endlessly. He was in panic and unexpectedly provoked another man who shouldn’t be approached…

- Description from Novelupdates

WARNING: FL is scheming and evil.