Rimuru is building a dungeon in preparation for the upcoming festival. It will feature treasure chests containing weapons made by Kurobe, and Veldora will inhabit the deepest floor as the final boss. Then Milim suddenly shows up with a suggestion...
They'll want to go deeper, 
kill stronger monsters,
سيرغبون في التعمّق أكثر
،وقتل وحوش أقوى
Die wollen immer tiefer vorstoßen,
immer stärkere Monster erledigen
Querrán vencer a monstruos más fuertes,
Querrán vencer a monstruos más fuertes,
Ils vaincront
des monstres de plus en plus forts
Più si addentreranno al suo interno,
più i mostri saranno forti.
Eles vão querer ir mais fundo,
matar monstros mais fortes,
Они спустятся вглубь и будут
сражаться с могущественными монстрами,