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...
This is why we need to sacrifice 
you while we still can.
لهذا السّبب علينا أن نضحّي بكِ ما دامت
الفرصة سانحة
Um so besser.
Dann können wir dich hier opfern.
Por eso debemos sacrificarte
mientras podamos.
Por eso debemos sacrificarte
mientras podamos.
Tu vas sous peu
nous servir de victime sacrificielle.
Ed è per questo
che vorremmo sacrificarti ora finché possiamo.
É por isso que vamos aproveitar
para sacrificá-la agora.
Вот мы и не будем тянуть время,
а принесём тебя в жертву.