NTR: Choice Based System - Chapter 180 Defiled (DOUBT) 3

Yu Sui and Shi Luo met each other when they were much younger. One was a pro-gamer, a widely-renowned, best of the best, in-game medic. The other was an e-sports newcomer who was just starting out. The two originally played for the same team, during which their relationship became increasingly deep.

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

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction.

As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!

[Regressed successfully!]Zick lifted his eyelids, revealing two dull eyes. A grand room filled with medical appliances was reflected on his pupil.The piercing pain originating from the abdomen made Zick slowly accept the reality.He had returned 10 years back in the past!The very moment from when Zick began to lose everything.[Destiny system has been activated. Get closer to people with strong destiny and strengthen your own destiny!][Sub-function: shall be unlocked soon!]After taking a look at the interface, Zick closed his eyes.“First…I should repay that chick for this wonderful gift.” Zick looked at the bandages on his waist.......{Additional tags: Age regression, Evil protagonist, cold female leads, Academy, evil organizations, conquering, war.}