Gil Dong: The Executor 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

While the Joseon Dynasty was on the verge of destruction by the ‘ghostly spirits,’ the only thing the people could rely on in place of the incompetent King was “Hwalbin,” a righteous outlaw group. Gil Dong, the son of ‘Hwalbin’ group leader Hong Mun, was reborn as the “executor of the prophecy,” to save Joseon by linking himself with the blood… and thus began a war against the ghost by rallying Hwalbin members scattered across the eight provinces of the country.