An ordinary salaryman is recruited by the Demon King to become one of his Four Heavenly Kings in another world-what could possibly go wrong?! Uchimura Dennosuke is just an ordinary Japanese salaryman, until he's sent to work in Vietnam where he dies in a hit-and-run accident. Uchimura is reincarnated and summoned to another world by the Demon King, who offers him a new job-as one of the Four Heavenly Kings of his army! Uchimura is faced with an offer he can't refuse, but can he do the job?