The Speedrun Manual of Miss Witch - Chapter 3 - Future, Past, and Old Days

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

At nineteen, Dexter was already one of the world’s most celebrated authors. His books topped charts. Critics praised his genius. Fans devoured every word. But behind the acclaim was a lonely boy—raised without parents, love, or real friends—just stories.He published his first novel at fourteen. By seventeen, he was a literary star. But the higher he rose, the hollower it felt.Then came the writer’s block. The headaches. The blackout. And the transmigration.Dexter awoke in the body of Daylan, a disgraced young man in a crumbling, medieval world laced with steampunk tech, divine law, and political unrest. Daylan had already failed two of the three sacred Trials—rites that determine one’s magical potential. He was drowning in debt, entangled in plots to overthrow a corrupt Divine Church, and branded a lost cause.With no way back, Dexter took the final Trial—the most brutal of them all—and began a path that would earn him the whispered title: Soldier, Poet, King.But as his powers grew, one question haunted him: Did he truly die? And if so, who—or what—chose to bring him back?

The countries of Mephius and Garbera have been waging a war for ten years and are trying to put an end to this long fight through a political marriage between the two royal families. Orba, who was driven from his home because of the war and was forced to become a gladiator, looks exactly like the crown prince of Mephius, and it has been decided he will be substituting him during the wedding ceremony. On the other hand, Vileena, the princess of Garbera, has secretly decided to ensnare the crown prince for her own country’s interests.

“Mr. Gatson, there’s a little boy at the reception claiming to be your ancestor.”“Chase him out!”“I don’t dare to, his face looks like a younger version of you!”“...”Five years ago, everyone thought she had passed in the orchestrated explosion.Five years later, she returned with her adorable four-year-old and over a hundred million fans.Immediately, some people started panicking, and all sorts of schemes to defame and frame her came one after another.She kept her cool and dealt with their tricks one by one, destroying the menacing whore, and collecting evidence to make her enemies pay for their deeds.And finally, she was accidentally pampered to no end by the most valuable man in the city!