Seriously, the world setting is awful.
In beginning its middle age europian with magic school on castle,horse carriage, feather pen,etc.
Suddenly in this chapter laptop and flashdisk usb????
Of course. the obligatory beach/onsen vacation episode - the Author even went the "extra mile" to exclude the "baggage boy" from the festivities so he would only have to draw 1 male figure.
Author clearly doesn't know what he wants to do with the story, so he's just throwing every trope at the wall without thought and sprinkling fanservice to try and retain part of the readers.