A Slave To My Vengeful Lover - Chapter 689: Asking about 1st wife...

[WSA 2025] To confront the threat posed by monsters and demons, humanity summons a hero endowed with a mysterious system and an unrivaled capacity for evolution. He becomes the last bastion of hope for mankind. However, one of his mistakes gives rise to a calamity far worse than the Demon King.This calamity is conceived in a dungeon, abandoned as a fetus by its mother, and raised by the Demon King himself. Upon the Demon King's death, all the restraints he had placed upon the creature are shattered. Thus, the hero's nameless son begins to lay waste to everything. The greatest calamity the world has ever known is born.

Ryu Han-bin, the main character who fell into a new world after being chosen as a ‘suitable person’.

Because of the error in the guidelines, the training is repeated endlessly…

Doomsday comes, and human beings enter the heavenly world.
Ten years later, Yang Chen, who was betrayed tragically, returned strongly with the Tianyu bug. In this life, he vowed to make the betrayal pay the price. He has a powerful bug bonus, just like an open hang. Frightened to hear…

- Description from novelbuddy

“Was trying to forget my past and live a peaceful life… a mistake?”His twentieth birthday was supposed to be a celebration, not his final moments—bleeding out on a bed, betrayed, and left to die.'Taking the life of a ‘good’ person makes you a murderer, but taking the life of a ‘bad’ one makes you a savior… Why?'As death embraced him, he whispered his final words—“The world’s kindness, right till the end..”…Only to wake up in an unfamiliar body.“Wait… I’m Noir Ravenlock?”A doomed heir, born to rule the world yet bound to a fate engraved with blood.In a world where morality shapes strength, survival demands more than just power—it demands understanding.And Noir, a man or perhaps a demon who once saw the world through twisted eyes, may just see something no one else can.