Again, this is nominally a story about delving supernatural dungeons in modern day Tokyo.
Also, it makes incredible sense that mysterious dungeon artefacts would have inscriptions written in conlangs - read it for yourself and you’ll get to this part and think “oh yeah that does make sense”
Also, just finished volume 4 it’s so good. ITS SO GOOD.
Please, j-novel club- print physical editions. IM BEGGING YOU. THE MANGA TOO

Sleepy-girl representation is important