While on the road to their field trip, Class 2-C's bus is enveloped in light, and the Goddess, Vicius, summons the students and their teacher to another world. The Goddess hopes to raise them as Heroes to defeat the Great Demon Empire, and she welcomes the students after appraising their abilities with her crystal. However, Mimori Touka is appraised as an E-Class, the lowest rank... and he's branded a trash hero.
The other is to collect the demon king essence 
released upon the defeat of the demon king
‫والثانية
Die andere ist, das Böse Element,
das bei Vernichtung des Großen Dämonenkaisers
La otra es recogerla en el cristal
de este colgante
La otra es recogerla en el cristal
de este colgante
La deuxième consiste à la récupérer
une fois libérée à la mort de l’empereur
L'altro è sconfiggere il Grande Imperatore dei
Demoni e raccogliere l'Essenza del Re del Male
O outro é
А второй —