If someone asked me that was going to be the one I was gonna say. I can't actually think of any other series he actually completed and didn't simply rush to an axed end.
WARNING The author of this series Im Dal Young abandons basically every series he writes. I will not be reading this because he's burned me too many times, but do take my warning seriously.
Why is this such a common trope? "People of the other world are less intelligent than the people of earth they need me to teach them basic concepts!" I'm pretty sure the Incans were one of the few cultures that didn't use the wheel for transport. There is no reason to suspect these people have...
MC is an idiot right? "I don't want the death flags from the game so I should do exactly what the character does in the game!" What? How does that make sense!?!?!?!