Welcome to the dungeon "The Sanatorium"

"Confront your fears, sever the cycle. As the clock strikes midnight, the repulsive stench of blood will fill this sanatorium, and the monster imprisoned by the Lord will descend upon the world, bringing... the Lord's judgment."

Alternative book titles

What? I'm actually a god?

Reincarnation Game

Blasphemers

What passerby? I am clearly the supreme god!