This story takes place before Rimuru's reincarnation. Shizu, also known as the Conqueror of Flames, responds to an urgent request calling her to the Kingdom of Filtwood. When she reaches the castle, many adventurers are already there. What request could have demanded such a huge gathering? It turns out a demon has been revived, and the adventurers have been called to subjugate it. It is said that more than ten of the most skilled adventurers have already been killed by this demon. But there is more to this request than meets the eye...
Episode 24: Black and the Mask
الحلقة 24: أسود والقناع
Episode 24 Zusatzgeschichte: Kuro und die Maske
Episodio 24: Negro y una máscara
Episodio 24: Negro y una máscara
Épisode 24 - Bonus : Le noir et le masque
Nero e la maschera
Episódio 24: Preto e Máscara
Серия двадцать четвёртая:
Чернота и маска