That Time I Got Reincarnated as a Slime: The Ways of the Monster Nation, Vol. 1 (manga) (THAT TIME I REINCARNATED SLIME MONSTER NATION GN)

It’s based from after the founding of the labyrinth in tempest and looks at the little details and daily life of the many different characters you would normally see. So if you want to know about the kind of place Tempest is and the life of the humans and monsters then take this book (and maybe the series) up for a read!