That Time I Got Reincarnated as a Slime, Vol. 13 (light novel)

The Empire deploys a vast army over 900,000 soldiers strong to invade theForest of
Jura. In response, Ramiris evacuates Tempest's inhabitants into theDungeon for
safety. While Primal Demons Testarossa and Ultima duke it outwith the Empire on the
front lines, the rest of the imperial army attempts toinvade Ramiris's labyrinthine
shelter. Little do they know, however, that theonly thing they'll find there is a
devastating bloodbath courtesy ofTempest's own mighty forces...