Renkinjutsushi no Sumu Bukiya is a Manga/Manhwa/Manhua in english language, Adventure 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

A young ex-adventurer named “The Alchemist” finds himself working as a consultant for weapons shops around town when suddenly he gets a letter that makes him return to his home town, what does the future have in store for this young Alchemist?