ClearSkyStorm
"Humanity was a myth"
In this world, humanity has been at war against Malice demons since the dawn of time -- they are the creatures born from negative emotions and spiritual filth. Only few of the people can see them, especially the kegare sorcerers.
In 1956, the science is now advanced enough and scientists and other brilliant minds collabed together to aid the kegare sorcerers on battling the Malice. In the military project, people can now summon entities born from their imaginations and subconscious called "Tulpas" or "Thoughtforms". However, some tulpas may came as hostile, thus the "tulpafication disease" is born when a tulpa tries to fuse with a person.
To solve this, scientists created the Lazarus project, meant to create supersoldiers that also possess a transformation ability based on their deepest, direst desire. However, an accident happen leading the project to be in two options: Option 1(become a zombie), option 2(be a supersoldier. The chances on becoming a zombie through serum is 50, and so becoming a super soldiers.
As time passes by, zombies became aberrants -- an abomination fused with the group of zombies. When an aberrant is killed, there is a chances that an aberrant will came back to life as a mimicker -- cellular being where their true brain is located in a tiny cell nucleus -- able to perfectly shapeshift almost anything. Capable of adapting, learning, and perhaps replacing humanity.
Several decades later after the end of zombie war, the surviving mimickers has infiltrated the human society -- pretending to be one of them and ruling the shadows with their vilest secret the fact that they were never human.
Lancer Hidalgo, became misanthropic and had a strong distrust on humanity after a brutal heartbreak. Lancer serves the mimickers(pretending to be politicians), helping them to find a human prey and prevents a faction of humans from discovering the truth about the "politicians" he served.