How do you keep cars, trains and weapon testing a secret from the rest of the country? Aren't they big, load and don't the trains make a lot of smoke trails because they run on coal.
How do they stop visitors from keeping their mouths shut. Like don't people visit for like business, tourism or family stuff (well likely the rich in this kinda society but still). They just come in see cars, telephones, books, etcetera, and leave thinking "well that was neat but no reason to tell anybody when get home." Also pretty nice nobody from this place is selling off any of these ideas to other people to make a profit. (I guess there weren't people with enough smarts and selfishness to go ahead and steal them like Tomas Edison)
Also just because you have blueprints doesn't mean you can create the inventions. People are limited by what tools and technology they have. Leonardo da Vinchi started blueprints for the early planes in the mid 1400's but planes didn't get off the ground until the 1900's with the Wright brothers. (i mean iron man 2 had a gimmick about this for Howard Stark knew how to create an element but he didn't have the means to do it. Tony found his dads work and had the tools and technology to create an element and was the first to make it)
I am going to give this one more chapter before I decide if I am going to stick to reading this or not. The first chapter was just fun and games but this chapter hit me in the face like "oh by the way our girl has photogenic memory and visited a bunch of museums as a kid so she is able to create an industrial age all by herself and also kept it a secret within her borders but its nothing you need to give serious thought about" Just... that is a lot to ask me to take lightheartedly.
Translators don't take this to heart I really appreciate the hard work you done to make this available. Your translation is great, your timing amazing,(like wow there is already a new chapter) and the cleanup very professional.
This is a criticism of the story itself. I enjoy a comedy but there is a limit my suspension of disbelief when it comes to how isekai characters adapt themselves into their new life. Especially when I read others that didn't do all the hard stuff off screen in a time skip with such ease. This story is just not turning out to be my cup of tea, but from other comments people are having more fun with it.