The Demon King Who Walks the World

As the Demon King, do I really need to exist in this world? Maybe not! Or maybe there is! That kind of thing is fine for me no matter what! After all, he is already the devil! ……………………… ……………………… ……………………… Note that this book is a novel written in the first person! Readers who are not used to this, please turn right when you go out! Fandom World: Starting from the Demonic Forbidden City -? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.