God-Tier System: Kill Beasts, Cultivate Forever - Chapter 7: Upgrade?

The real daughter of the Lin family, Lin Luqiu, was lost for many years and was found suddenly, only to be asked by her parents to replace her fake daughter sister in marrying a living corpse!She uses her exceptional medical skills to wake her vegetative husband, but to her surprise, the first thing he says upon waking is, “Let's get a divorce.”She laughs in anger, “Fu Jingchen, you really are an ungrateful dog of a man.”After the divorce, everyone learns that the seemingly rustic girl is actually wearing many hats as the true powerhouse.She is actually the prized disciple of a giant in the medical field, a world-class piano master, and a genius jewelry designer... all of these are her.Later, a regretful President Fu comes to ask her to remarry.She dominantly refuses, “President Fu, sorry, no time!”The man pulls her into his arms frantically, “As long as you come back, I will give you my life!”

She, a modern hidden ghost leader of an organization which gathered insane prodigies proficient in the various differing skill-sets. Highly skilled in medicine and poison, executes covert assassinations, viewed as insane and demonic in the eyes of people of the world. Killed in an accident, and reborn into the body of a disfigured young girl.

What? Face disfigured, identity stolen? A return to the family dim and hopeless? Her identity can be given up, her family can be forgone, but as for the one who harmed her predecessor who inhabited this same body, if she didn’t at least make them scream in unimaginable agony and throw them into a state of wretchedness, how could she live up to her demonic reputation? Endless turmoil ensues and it’s a battle to dominate over all! See how she shook the world dressed in a suit of red, her sword up against the dominant powers that rocked the Heavens! Her name spread across the seas, shocking the earth!

- Description from Novelupdates

Klein’s greatest wish is to transmigrate to another world and live life in an isekai, just like in anime, manga and novels. However, fate is on his side and the typical truck that the main characters always carry in isekai runs over Klein. But, to his bad luck, he lived a few more days in the hospital and, just on the day he died, Klein heard a ⟨⟨-DING-⟩⟩ that he knew it meant. That was the day of his death, but also the beginning of his adventure into another world.