Global Class Change: Invincible from the Demon King Onward

A black fog descends, the world undergoes a transformation, and humanity enters an era where everyone changes class.

Monsters run rampant! Countless secret realms and abysses have appeared!

While everyone else changes into ordinary classes,

Ling Yu becomes the one and only strongest class of all: the Demon King!

From then on, every dungeon he's in becomes a different place.

"What the hell! Why do all the monsters we struggled to beat just lie down when they see him?!"

"That's nothing! I saw the monsters in one dungeon switch sides the moment they saw him!"

"What the hell? Isn't that a King-tier boss? Why is it kneeling to him?!"

"Boss, take me along!"

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.