Street Restaurant of a Returned Hero is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Kyungho returns to Earth after 10 years of saving the Spirit Realm from the Demonic Realm. However, the Earth that he returned to is being attacked by the demonic realm just like how the spirit realm was attacked. Will Kyungho, who dreamed of living a normal life with his mother by operating a restaurant, be able to protect Earth?