I tried to give this a chance. I picked this up way back then in hopes it could explore the implications of having an entire country isekai'ed. For a country like the size of Japan, it's would have enough for all sorts of amazing feats. But also small enough that it should face all sorts of struggle too. There's so much political ramifications. Societal upheavals. Logistical challenges. I really was hoping that I can be treated to exploration.
But it seems this is just a Japan dropped in a self-sufficient amount of oil and other materials. This is unfortunate but I guess I did saw the warning. Time for me to drop this.
Though I will periodically check on it. If nothing else, I think that mentioned of that super magic civilization could be a foreshadow to something interesting. Maybe later, that civilization will appear making a magic vs technology battle that faces each other as equals. But since that is likely dozens of chapters ahead but the even appear. I'll drop for now.