Also, this story is certainly one of the top tier isekai. Great world building, logical plot progression and a well explained magic system. And most of all a MC who isn´t op for no reason and actually has to overcome challenges. I would put this somewhere in the same rating range as (in descending order) "Ascendance of a Bookworm", "Accomplishments of a dukes daughter", "Dahlia in the bloom", "Housekeeping Mage" and "Making magic: infinite mana loophole".