Humiliated by My Emperor Parents, I Became the Demon Lord and Regretted It Too Late

The Protagonist Is Depressed, Utterly Radiating Despair

No two-male-lead stories, no two-male-lead stories, no two-male-lead stories. Important things have to be said three times.

The Protagonist Was Switched at Birth but Becomes a Big Shot Through Their Own Hard Work

The protagonist was switched at birth and, after growing up, meets a fake young master or young lady who bullies them, unaware that the protagonist has an extraordinary identity. After reuniting with their birth parents, the protagonist becomes the apple of everyone’s eye.

The Male Lead Was Cast Out by the Light, So He Turned Around and Joined the Darkness

Despair, Utter Despair! The Protagonist Joins the Dark Side in the End

Two Male Leads: Switched at Birth, Abused, and Rejected by Their Family Even After Being Found

Looking for books like "After the Universally Hated One Became Critically Ill, the Male God Finally Regained His Sight." The more heartbreaking, the better.

Stories About Creating Superhumans or Monsters Behind the Scenes, and Exploring the Path to Godhood

I’m looking for books similar to *I Created the Monster Sequence!* Stories about creating supernatural beings or monsters from behind the scenes and exploring a path to godhood would be great. Or even stories where the protagonist can perfectly copy the abilities of every monster they create. Please don’t recommend stories where someone else’s creations are just tools and the protagonist gets nothing out of it.

Any Stories About the Fake and Real Young Masters? The Real One Cuts Off His Family and Lives His Best Life Alone

Looking for a male lead who has given up on his family and cuts ties with them completely. He wants nothing to do with them ever again, and whatever they do for the fake young master is none of his business. He'll shine in his own field. They didn't treat him right, so he's done playing along. He wants nothing to do with any of them.

Demonic Cultivation, a System, No Goody-Two-Shoes Protagonist, and an Impressive Background!

Are there any stories where the protagonist cultivates demonic arts? With a System, and no goody-two-shoes protagonist.

Looking for an Older Novel Where the Female Lead Is Actually a Phoenix and the Male Lead Is the Demon Lord

The heroine was originally a phoenix, but her older sister pushed her down to the mortal realm, where she became the daughter of the prime minister. The male lead was a Demon Lord who followed her down and became a prince. Neither of them had their memories, and they fell in love in the mortal realm. The heroine died while trying to cure the male lead's poison, but then she returned to...