One Piece: Fist of the World - Chapter 56: Leaving and Party!

Damien was reincarnated as the villain in a shelved novel. He find himself on a wedding scene where the protagonist was destined to rob the marriage.He smirked while looking at the proud protagonist and arrogant heroine.Aren't you proud and arrogant? Let you know the consequences of offending the Villain!Destroy the background behind you and capture your family!Don't you love her? Aren't you the son of fortune? Kneel Down!!Now the choice is yours! Do you choose your family or the heroine?“Hehehe didn't the heavenly dao want to suppress and kill me? Let's see how I will play with your chosen 'son and daughters' to death! When the auspicious time will come, I will kill you too!!!”

Cao Xin, a young man on earth, died in a car accident, traveled to a troubled world where supplies were scarce, and obtained a “Bronze Immortal Gate”…

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- Description from novelbuddy

A mysterious natural phenomenon caused the Earth to be plunged into darkness. The world turned into an endless bloody chaos and mankind is on the brink of extinction…

To save the hopeless Dark Fantasy World, I held back my tears and destroyed the world, then killed the Demon King and returned.

Now, I’m trying to save the world using the ‘System’ I gained as the ‘Regressor’s Privilege’… but the Main Heroines have also awakened their memories of the previous timeline.

God damnit.