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...
but I have not forgotten the 
debt I owe to you, Great Rimuru.
لكن لم أنسَ دَيني لك يا ريمورو-ساما
aber ich werde nie vergessen, was Sie
für mich getan haben, Meister Rimuru.
no he olvidado
lo que le debo, señor Rimuru.
no he olvidado
lo que le debo, señor Rimuru.
je n’oublierai pas
ce que vous avez fait pour moi.
ma non per questo dimenticherò
il debito nei vostri confronti, Grande Limur.
mas não esqueci a dívida que
tenho com você, Rimuru-sama.
но я никогда не забуду,
в каком долгу нахожусь перед вами.