Fantasy City: I Am the King Killing Demons

The king will slay the devil. I report it! This world is too chaotic, forget about gods, demons, aliens, heavenly beings and so on. There are also various film and television worlds. What the hell are Under One Person, I Have a Date with a Zombie, Soul Ferry, and Armed Girls? Are you supposed to be in the same world? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.