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...
It was an imitation name given 
to me by an old acquaintance.
كان اسماً مُزيّفاً منحني إيّاه أحد معارفي القدماء
So nannten mich meine
alten Freunde scherzhaft.
Es un nombre de imitación
que me dio un conocido.
Es un nombre de imitación
que me dio un conocido.
Un surnom donné
par une ancienne connaissance…
È un appellativo datomi
da una mia vecchia conoscenza.
É a imitação de nome dado a mim
por um velho conhecido.
Прозвище, данное мне старым знакомым.