I'm a Fake NPC 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.nl fastest updating comic site. The Summary is

Games are now more immersive than they have ever been since fully diving into a game is perfectly possible! But what would you do… If you get spawned as a NPC Blacksmith? SuFei begins his everyday bitter and dull Blacksmith life together with a beautiful female player and his Loli assistant. However, everything ended in that NPC trip….. Don’t come over, I’m really a NPC! Wait, what the heck is your slogan? “ Exterminate the players, the world belongs to the NPCs?"