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.
I swear to you on the name of 
Mikami Satoru... no, Rimuru Tempest,
،أقسم لك باسم ميكامي ساتورو... لا
،باسم ريمورو تيمبيست
Ich, Satoru Mikami, verspreche es dir.
Te juro en nombre de Satoru Mikami…
no, Rimuru Tempest,
Te juro en nombre de Satoru Mikami…
no, Rimuru Tempest,
J’en fais le serment !
Te lo prometto!
Eu te prometo! Em nome de Mikami Satoru!
Ou melhor, de Rimuru Tempest!
Клянусь тебе именем Сатору Миками…
нет, Римуру Темпеста!