I have a idea! I am only to 43 chaptersand haven’t read the LN so I don’t think that it is a kind of spoiler, just my thoughts regarding future actions of Satou and girls. So as far as I know Satou is controller/master of the source in Valley of Dragons. So he can found/establish/build there a town or a city, where can beast folks, demi-humans, slaves live peacefully and become citizens of that city. So despite that he was a programmer before he transported to another world, with that also reborned girl withe purple hair and eyes(forgot her name) do reforms on common laws, agriculture, bussiness, magic, culture ans so on.(within rational boundaries, of course ), and then along with that girl he can rebuild ancient stone monoliths, that were supposed to be transportation gates across the worlds.
I am not sure if someone already mentioned this before, but the FL in the Poster somehow reminds me of Tohsaka Rin from Fate series. Do anybody think like that too?
Only a little bit, if I say myself, after some thoughts and seeing it more often at the begging of each chapter.
I think that’s why I like her so much