Dennosuke Uchimura, an ordinary salaryman, meets an untimely death in a hit-and-run. Reincarnated in a fantastical realm, he is summoned by the Demon King, who offers him a position as one of the Four Heavenly Kings. Uchimura must adapt his corporate skills to survive and thrive in this new world filled with magic and danger. Key characters include Uchimura and the Demon King, setting the stage for an adventurous journey ahead.