The Gaming Expert 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

Moon Seon-woo! He spends over half his day grinding for items in this VR game known as “Final Kingdom” just to make ends meet, with no stable job or anything. Seon-woo, being all ambitious for cash, gets hooked up with a job through a friend, but guess what? It’s a total trap! Taking a huge risk, he fulfills the hidden quest conditions and ends up in some secret hideout where he wakes up this sealed women named Se-jin. Turns out, Se-jin is a total Expert when it comes to “Final Kingdom”! She knows all the ins and outs of the game! Now Seon-woo’s got his sights set on clearing all the hidden quests, aiming to become a fat-cat in the process…