Contained from the Start, I Become a God Through Possession!

The Protagonist Is a Monster Who Voluntarily Gets Contained, and Humans Can Use Their Abilities

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

Something like The Black Dragon Code.

Looking for an Invasion-Type Story. I’m Out of Reading Material. Please Recommend One About Invading Other Realms

Preferably a bit more ruthless.

The Protagonist Is a True Evil God: Nonhuman, Lovecraftian, and Simple-Minded

I'm looking for books like Horror Livestream: The Clingy, Lovesick Evil God Comes Knocking. The entity can take human form but should still be inhuman, with the human appearance simply making it easier to interact with people. It shouldn't even try to hide that it's an evil god. Lovecraftian elements are fine. Its way of thinking should be rather simple, so it's easy to fool. Really

Please Recommend Stories Where the Protagonist Isn't Human but Pretends to Be in the Human World

I'm looking for books similar to Playing the Player Today. Please recommend stories where the protagonist isn't human but disguises themself in the human world. The protagonist should be cold-blooded.

Grow Strong First, Then Invade Other Worlds

Are there any stories involving a world invasion?

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.

The Male Lead Can Transform Into a Monster and Change Back Whenever He Wants

The female lead can be present or not, but the male lead must not be a bleeding heart.

Highly Rated Stories About Sequences, with a Protagonist Who Has a Special Sequence or Contracts a Special Monster

Looking for books similar to Sequence: Ascension to Godhood (Sequence: Ascension to Godhood).

Hand Over Those SCP-Creation Novels You’ve Got!

Survive the Paranormal, Safe House, Upgrade Everything

Looking for books like Doomsday Ghost Shadow: I Can Upgrade My Safe House. This is a help request. I’ve only found three books on the market so far. I’m looking for survival stories with supernatural horrors and the ability to upgrade everything.

The Middle Ages, Retro Style, the Steam Age, Lovecraftian Horror, and the Mysterious

I'm looking for books similar to The Pillar Project. Something like Lord of the Mysteries, set in the medieval steam age, with Lovecraftian elements, an enigmatic atmosphere, and mysterious secrets.

The Protagonist Becomes an Entity of Horror and Spreads Fear

Please Recommend Cthulhu-Themed Novels Where the Protagonist Is Already an Old One from the Start

Madmen, Flesh-and-Blood Technology, the Unknowable, and Cthulhu

The Protagonist Discovers the World Is Fake and Has to Pretend Not to Know in Order to Survive

Any Stories About Someone Becoming a Parasite That Controls People?

Looking for Stories Where the Protagonist Is Reborn as a Parasitic Brain Worm

I just had an idea. Are there any stories like this? I can't get enough of my own, aaaaaah!