Leviathan of the Covenant - Volume 1, Chapter 3 - Revived Flames

[Simulation] + [Isekai] + [Goblin] + [Harem]After a long sleep, I awakened in a new life—as a goblin. Weak and insignificant, I found myself reborn as the lowest creature in a world filled with hostility and danger. But from the shadows of this cruel world, a silent rise begins...

Aomori, who has a monster-fighting system, came to the world of One-Punch Man and gained the ability to enter various instances.

Therefore, “Founder of the Hero Association”, “NO. “And other titles fell on him one after another.

Comprehensive flow, the main world One Punch Man.

Completed dungeons so far: Pokémon – Demon Slayer – Sword – Pokémon – Digimon – Spell Return – Yokai Comprehensive World (Girls that Noragami Inuyasha can see, etc.) – Pokémon – One Piece-re0-Dragon Ball wait.

- Description from novelbuddy

Possessing the power of the demonic path, he follows a cultivation method that absorbs the essence of heaven and earth and seizes the spirit of all beings.Yet this power invites endless enmity, shunned by the heavenly way and despised by righteous sects. His sect is destroyed, and he barely escapes with his life.By chance, he acquires a mysterious blood mirror that opens a portal to an apocalyptic world overrun by zombies.On this world, he can freely sacrifice zombies without facing divine retribution; instead, he gains boundless merit and luck!Freed from the restraints of the heavenly way, his lifespan and cultivation soar to unimaginable heights, rivaling even the heavens.True demonic cultivation is not just the pinnacle of power—it is the path to defy fate and reshape destiny!