Reborn As the School Hunk's Dearest Daughter - Chapter 56 - : Chasing Meng Ying Away

[Congratulations Seo Hoyun! You have been selected as a player in the Unknown Idol Tycoon.]The good-for-nothing PD, who is criticized by everyone, becomes a unknown idol in a parallel world.Only his younger sibling remembers him.To return to the original world, he must become a top idol and clear the game!“…Quest accepted.”“Are you crazy?”“Don’t we need to eat and live?”His specialty is blackmailing, his hobby is persuasion.The survival story of the unscrupulous PD-turned-idol who will stop at nothing!

A man with a lifelong martial arts background, raised in Asia due to his family's profession, moves to the US for education and work. He discovers Historical Medieval Battles through a colleague and becomes deeply passionate about it. He trains hard and becomes skilled enough to represent his country.During a competition, his armor fails, and he's struck in the head with a two-handed axe, seemingly dying. But is this truly the end?

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

Satou Shiki a Japan present-day university student suddenly one day he got attacked by a slasher when he open his eyes he was already transferred to another world’s labyrinth city. In that another world he who was awakened to do a lot of “things”.