My Wife Is Actually the Empress? 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

With my wife's breathtaking beauty, not even the newly enthroned empress can match her! With my wife's marvelous culinary skills, not even the empress's royal chefs can match her! My wife loves me and cares about me very very much, and I wouldn't trade her for even the empress! Wait, what? My wife is the empress?!