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.
and a great number of heroes 
to these ruins in the past.
‫وعدد كبير من الأبطال إلى تلك الأطلال في الماضي.
wurden in diese Ruinen geschickt.
y a muchos héroes de bajo nivel.
y a muchos héroes de bajo nivel.
ainsi qu’un bon nombre de héros
par le passé.
di eroi e criminali
considerati altamente pericolosi.
e um grande número de heróis
nessas ruínas no passado.
преступников и героев,
которых сочли особо опасными.