Welcome to Erron, a strange planet where high magic is the norm and iron and runes are woven together.

The sacred covenant made five hundred years ago brought peace, but also gave birth to a strange and bizarre new era.

Magic crystal technology drives the floating city, personal terminals connect all living things, automated factories roar in operation, and the city is the pinnacle of the steel jungle, with clear social classes.

Magic neon lights illuminate the laboratories of the elves' innovative factions, the goblins' financial exchanges, and the succubus's emotional live broadcast rooms.

Loren Gerlis Isaac, a young red dragon who just turned twenty, is facing a life crisis due to the cancellation of subsidies and the decline of by-products.

"It's impossible for me to go to work. I'd rather be an animal in a zoo!"