The Merman Empire

Any Stories Where the Male Lead Is a Complete Scumbag?

I'm looking for books like "A Scoundrel's Life Begins at His Auntie's Boarding House".

Nonhuman Protagonists (Not Animals): Cold-Blooded and Brutal, Evolving and Eating People

I'm looking for books like As a Monster, Is It Really So Wrong to Eat a Person?!

Looking for Stories About Building a Faction, Puppets, Slaves, and Dark Themes

Any Stories That Go Against the Canon, Like This One? Preferably With a Ruthless Protagonist

Looking for books like Dog-Walking Thug: from the start, I Drive a Young Fairy Girl Crazy! (The Ultimate Thug).

No Stories Where Characters Talk About Being Dark and Evil but Then Do Good Deeds

Looking for stories similar to Supernatural Revival: Controlling a Mirage from the Start. The protagonist should be cold-blooded, ruthless, and evil to the core. Read the requirements carefully, and don't recommend something that will get you cursed out. (I'm overflowing with positive energy and need some dark energy to balance it out. I'm not dark myself, I just need what I lack.)

Dark Fiction, No Romance, Protagonist Opposed to Humanity

Please Recommend Dark Stories, Not Pretend Evil, but Truly Evil With No Limits. Any Rating Is Fine

Any Extremely Dark Stories About Controlling People?

Dark Novels with a Selfish, Self-serving Protagonist Who Deliberately Causes Disasters and Harms Others

Looking for books like Supernatural Revival: Starting Out by Controlling a Mirage.

Enslavement, System, Building a Faction and Rising to Power

I Want a Purely Self-Interested or Purely Evil Protagonist, No Gradual Corruption or Change

Looking for stories like Murder Apartment: My Talent Grows Infinitely. As the title says, pure self-interest means being willing to do anything for power, without scruples and without mercy. Pure evil means doing evil purely for fun, without needing any particular...

Give Me Something Antisocial, with Extreme Self-Interest. Ideally with a Touch of Realistic Fantasy

Semi-Behind-the-Scenes Stories Where the Protagonist Appears but Is Very Mysterious, or Only Sends Others Out

Must have at least 10,000 readers and 1,000 reviews!!!

Protagonists Reincarnated as Strange Things or Creatures

Turn Enemies Into Your Own Underlings and Control Their Minds

The Ultimate Darkness and Brutality

Looking for books similar to The Myriad Worlds: Let Me Roam at Will.

Behind-the-Scenes World Creation Stories, Like Raising the Human Race

I'm out of books to read. Can anyone recommend a few behind-the-scenes mastermind novels?