Rimuru becomes the new teacher for Shizu's students. However, having been summoned into this world against their will and facing shortened lifespans as a result, the children's feelings are complicated, and they're reluctant to accept Rimuru. So Rimuru proposes a series of mock battles with each of them to ascertain their abilities and allow them to let off steam.
Shizu-san came to this world around 
the same time these kids did, right?
أتت شيزو-سان إلى هذا العالم في مثل
توقيت وصول هؤلاء الأطفال تقريباً، صحيح؟
Shizu-san vino a este mundo
por la misma época que ellos, ¿no?
Shizu-san vino a este mundo
por la misma época que ellos, ¿no?
Shizu è arrivata in questo mondo più o meno 
nello stesso periodo di questi ragazzi, no?
Acho que a Shizu-san veio a este mundo
mais ou menos com a idade deles.
Сидзу ведь в этот мир попала
примерно в том же возрасте, что и они?