Salaryman ga Isekai ni Ittara Shitennou ni Natta Hanashi

Salaryman ga Isekai ni Ittara Shitennou ni Natta Hanashi is a Manga/Manhwa/Manhua in (English/Raw) language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.com fastest updating comic site. The Summary is

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?