The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time....

Uchimura Denosuke is your normal, everyday salaryman trying to climb the corporate ladder. But then he’s summoned to a terrifying fantasy world by the Demon Overlord, who offers him a new job—as one of t...