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...
This is indeed a great role 
that none but I can fulfill!
هذا بالفعل دور عظيم لا يستطيع
!أحدٌ سوايّ إنجازه
Denn nur ich kann diese
wichtige Aufgabe überhaupt erfüllen!
¡Es un papel crucial
que solo yo puedo cumplir!
¡Es un papel crucial
que solo yo puedo cumplir!
Je suis le seul
à pouvoir remplir ce rôle.
È un ruolo a cui io e solo io
posso dare giustizia!
Esse é mesmo um grande papel que
ninguém além de mim pode cumprir!
Ведь кто, как не я,
сумеет справиться с таким великим делом?!