I Became a God in a Horror Game - Chapter 145: Part 1

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

Cornered and with a face full of grievance, she exclaimed: 'You lied again!'He laughed: 'Behave, I'm not deceiving you this time.'To escape from Gu Beicheng, the demon, Xia Yinyan found herself a contractual boyfriend. Unexpectedly, the demon turned out to be the uncle of that very boyfriend.He is the domineering emperor of the business world in Yecheng, abstinently aloof and indifferent to women. However, the little creature who accidentally entered his life has made him protective for a lifetime...

Korean entertainment novels, I don’t like it.

There are already three copies, character protection, never TJ.

- Description from novelbuddy

Cifer was offered as a sacrifice to the devil by his own family. Instead of dying, was given a chance to live in another world. The One True God has given him a mission. Stop the higher being calling themselves gods from snatching soul from the life stream and restore balance.An adventure will begin from a devil's sacrifice to be one of the most powerful beings seen.With a body of a titan and souls of devils, grasp power and devour everything for happiness and freedom.