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...
if we save the ores and stuff 
that we've dug up in here...
إذا حفظنا الخام والأشياء الّتي
...نُنقّب عنها هنا
dann könnten wir das Eisenerz, das wir
abgebaut haben, hier aufbewahren und …
si almacenamos
los minerales que excavemos aquí…
si almacenamos
los minerales que excavemos aquí…
si on stockait du minerai de fer
dans cette zone…
a beccarsi tutta questa sostanza magica...
se guardarmos aqui os minérios e
outras coisas que desenterramos...
стоит оставить тут ненадолго руду
и железо…