The Top Dungeon Farmer is a Manga in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on solofarminginatower.com fastest updating comic site. The Summary is

Sejun, your average Seoul underdog, didn’t expect to grow tomatoes full-time when he stumbled into the mysterious dungeon full of monster quests and extravagant rewards. Yet, there he was, as a farmer growing and selling cash crops while clearing numerous quests that came his way. Will Sejun make it out of the dungeon with the plush rewards he hoped for? At least he has what it takes: optimism, resourcefulness, and a group of loyal furry friends.