A merchant from the east brings Hinata Sakaguchi a new book. In it she finds surprising information about the Jura Tempest Federation, a nation of monsters. As a former student of Shizu's, what goes through Hinata's mind upon learning about the existence of Rimuru? This special episode gives some hints as to what's coming in the new arc, as well as a look back at Rimuru's exploits thus far.
the Demon Lord abandoned his castle 
and vanished somewhere,
،غادر سيّد الشّياطين قلعته واختفى
Der Dämonenkönig verließ
sein Schloss und verschwand.
el Rey Demonio abandonó
su castillo y desapareció
el Rey Demonio abandonó
su castillo y desapareció
le roi-démon disparut,
laissant son château derrière lui…
il Re demone lasciò il suo castello, 
facendo perdere le sue tracce
o Lorde Demônio abandonou seu castelo
e sumiu para algum lugar,
Князь Тьмы бросил свой замок
 и исчез без следа.