Salaryman Ga Isekai Ni Ittara Shitennou Ni Natta Hanashi
Other titles :
Sarariiman ga Isekai ni Ittara Shitennou ni Natta Hanashi, Story About a Salaryman Who Became one of the Four Heavenly Kings When he Went to Another World, サラリーマンが異世界に行ったら四天王になった話
Dennosuke Uchimura, is a simple Salaryman, who one day dies run over, and is invoked in another world, by the Demon King himself, who offers him employment as one of his Four Heavenly Kings. Can Dennosuke survive as a servant of the Demon King, and meet his expectations?