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...
It reminds me a lot of the 
place where I was sealed...
...تذكّرني كثيراً بالمكان الّذي خُتِمتُ فيه
Irgendwie erinnert es mich an den Ort,
an dem ich versiegelt war.
Me recuerda al lugar
en el que me sellaron.
Me recuerda al lugar
en el que me sellaron.
J’aime pas trop…
Come dire...
Isso me lembra muito o lugar
onde fiquei selado...
Как бы так сказать, Римуру…
Вспоминается пещера, где меня запечатали.