That Time I Got Reincarnated as a Slime: Trinity in Tempest (Manga) 3:

The new spinoff manga to the hit fantasy isekai series, developed by original creator Fuse! Against the odds, the little slime Rimiru has established his magical kingdom for all monsters, called Tempest, and it's thriving. But three visitors, Phos the fox girl, Stella the dragon girl, and Nemu the winged girl, come to pay Tempest a visit, they're stunned at just how quickly it's developed. Don't miss this new story in the world of Slime, just as the second season of the anime arrives! BARRIER REAVE An eerie barrier surrounds Tempest, and townspeople begin falling to the ground, one after another, only for merciless human soldiers to attack them! The trinity of Phos, Stella, and Nemu race through the bloodied town. Can this curious trio bring peaceful days of smiles and good cheer back to this industrious land of monsters? The infamous disaster that befalls Tempest is retold from the Trinity’s point of view, in this third volume, with story and supervision by series creator Fuse!