Mimicry and Devouring: The Lone Monster of the Apocalypse

A Monster Protagonist Who Is Undying and Immortal, Neutral, and on No One’s Side!! Horror

Apocalypse, Lone Wolf, Self-Interest, Strength Above All, No Female Lead

In the apocalypse, you don’t have to be completely numb to everything, but you should at least be decisive and ruthless, right?

Apocalypse, Core Crystals, Superpowers, and Blades or Halberds. A Cold, Emotionless Hero, No Heroine

The Protagonist Becomes a Nonhuman Being and Gets Found Out

Something like turning into an undead creature, an animal, or a supernatural being. The protagonist uses their strong humanity to suppress their instincts and keeps growing stronger. Nothing too meme-heavy, please. I'd prefer vivid, descriptive writing and tight storytelling.

Any Stories Where the Protagonist Has Flesh-Based Abilities?

Sacrifice, the uncanny, ancient gods, flesh, tentacles, transformation, blood, bones, human modification, forbidden alchemy. That kind of thing.

The Protagonist Becomes a Monster and Keeps Evolving. No Harem, No Goody-Two-Shoes

Something like The Black Dragon Code.

Looking for Stories Where the Protagonist Turns into a Monster from the Start and Never Hides It, So Everyone Knows What He Is

Ideally a dark story, where becoming a paranormal entity means killing without hesitation, and becoming a monster means getting revenge on everyone who wronged you. No hiding your strength or identity, no putting on a mask.

Stories About Stripping, Parasitizing, Devouring, Evolving, Fusing, and Absorbing

Any Apocalypse Stories About Lone Wolves?

No female lead, no factions, decisive and ruthless, and no leftover women.