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.
Shizu-san remained in service 
to the Demon Lord Leon.
ظلّت شيزو-سان تخدم سيّد الشّياطين ليون
Der Dämonenkönig Leon hatte
Shizu unter seiner Kontrolle.
Shizu servía al Rey Demonio Leon.
Shizu servía al Rey Demonio Leon.
Shizu avait œuvré
au service du roi-démon Leon,
Shizu rimase al servizio del Re demone Leon.
Shizu-san permaneceu a serviço
do Lorde Demônio Leon.
Сидзу… принудили служить 
Князю Тьмы Леону.