Naruto: Kurotsuchi Mayuri - Chapter 388 - 284 : Proposal!!

A Betrayal of Fate--- Anos Voldigoad, a young man of noble spirit, faces a devastating turn of events. Betrayed by his own kind and the woman he loves, he’s thrust into a world of darkness and despair. His world shattered, his parents murdered, and his beloved forced into the arms of his sworn enemy, Anos questions the cruel hand of fate. As he succumbs to his mortal wounds, a final, haunting image lingers: the smug grin of his tormentor, taunting him with promises of his lover’s destruction. In his dying breath, Anos wonders: Why has God forsaken him? Is it because of his weakness, his goodness? As the darkness claims him, a seed of vengeance is planted, a promise to rise from the ashes and exact his revenge, no matter the cost.

I became the Heavenly Demon’s dog.

Only I know the end of this world.

One day our MC finds himself stuck in the world of his favorite webnovel. What does he do to survive? It is a world struck by catastrophe and danger all around.

His edge? He knows the plot of the story to end. Because he was the sole reader that stuck with it. Read his story to see how he survives!

Octavius, misled by friends, embarks on a quest to clear his father's name, ultimately facing a tragic end with his sister.Their journey results in devastating loss, leaving him powerless and yearning for revenge against those who harmed his family. Spirits offer him a chance to reincarnate, but he refuses, saying;“What’s the point of a new life if I keep running from my problems”The entities are taken aback by his unwavering decision, having never encountered a spirit who refuses to escape their troubled past. They warn him about the evil being that now resides in his old body, but that only motivates him. He believed In the saying - to defeat a monster, you have to be twice as monstrous.Embracing his fate as The Phantom's Gambit, they traverse the shadowy path of retribution, their identities blur, secrets unravel, and the line between savior and monster fades.This is a tale of darkness and redemption, where justice is a blade, and revenge is the only way forward.