Kuro no Maou - Chapter 1 First awakening

A modern-day antihero, who was infamous for his devious acts, dies in an explosion meant to take down a powerful criminal syndicate. Waking up in a world of sword and sorcery, he finds himself possessing a fragile, powerless body with a strange “System” that seems broken. Initially thinking he's doomed, he learns that by pretending to be weak, he can manipulate others into revealing their secrets, granting him abilities they possess. As he rises in power, he discovers that the System was intentionally sabotaged—by none other than his own future self.

When an S-class elite assassin-raised captain of a special ops suicide squad comes home from a high-stakes Africa mission, he finds himself offered something that could potentially set him up for life- a curious assignment that he could use to finally exit his days of war and slaughter.

Su Yang was an average university student in Shanghai when he received a system that allowed him to add points to things. The point system provided him with missions and by clearing them, he would gain points.

~She is a waste daughter from the Su family that couldn’t cultivate. On the day before her wedding, the Third Prince breaks off their engagement in the street. Her own sister replaces her in the marriage to the Third Prince. She became the center of gossiping in the city. In her resentment, she hits herself on the Su Family’s gate, only to become the object of other people’s ghost marriage.

She, Su Zimo, open her eyes to find herself sleeping in a coffin. It’s not to surprising seeing as she put herself here (hit head on gate), but why is there another person lying beside her? And whats more they are wearing red wedding clothes. After taking all this in she almost faints.

~He, is a cursed person with an indescribable status. This curse that has been passed down in his family for centuries is now effecting him.

A mistaken ghost marriage, a battle in business, and a long period of painstaking love, made their fate intertwined.

- Description from Novelupdates