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.
So after a certain point, it was decided 
we would start dealing with such heroes.
‫لذا في مرحلة معينة، قُرر أن نبدأ بالتعامل مع أولئك الأبطال.
Daher werden solche Helden seit jeher
Por eso en su momento se decidió
que era mejor eliminarlos.
Por eso en su momento se decidió
que era mejor encargarse de ellos.
De ce fait, à partir d’un moment,
Per questo, a un certo punto,
Assim, depois de um certo ponto,
foi decidido começar descartar esses heróis.