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...
Indeed, though a lapse in my 
attention allowed them to escape.
تماماً، رغم أنّهما تمكّنا من الهرب
في غفلةٍ منّي
Genau. Aber sie sind
mir leider entkommen.
Sí, aunque un descuido los dejó escapar.
Sí, aunque un descuido los dejó escapar.
J’avais commis l’erreur
de les laisser s’échapper.
C'è da dire che sei stata così disattenta 
da lasciartelo sfuggire.
De fato, embora minha falta de atenção
tenha permitido que escapassem.
Вот только…
расслабился и случайно упустил их.