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...
How can one who caused me pain die 
at the hands of this weakling?
كيف لشخصٍ سبّب لي كلّ هذا الألم
أن يموت على يد هذا الضّعيف؟
Wenn du, die mir Schmerz zugefügt hat,
¿Cómo es que alguien que me causó dolor
se deja matar por alguien tan inferior?
¿Cómo es que alguien que me causó dolor
está a manos de alguien inferior?
Toi qui as réussi à me blesser,
Tu sei colei che mi ha fatto provare dolore,
Como alguém que me causou dor
vai morrer pelas mãos desse inseto?
Ты ведь сумела причинить мне боль,
а сама умираешь от лапы ничтожества?