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...
That's when the holes will appear.
حينئذ سوف تظهر الثّقوب
Ed è allora che potranno comparire i fori.
Quando acontecer,
os buracos vão aparecer.
Вот тогда-то отверстия и появятся!