That Time I Got Reincarnated as a Slime Novel Volume 3 is written by Fuse with illustrations by Mitz Vah.

After a furious battle with the orcs, peace has once again returned to the Forest of Jura. Rimuru may be heading up the Great Forest of Jura Alliance, but he's mostly worried about finishing his town...until a visit from King Gazel Dwargo of the dwarves turns everything upside down. Not only that, but he's about to have a run-in with an exceptionally dangerous demon lord. What's a slime to do?!