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.
If we let that thing run free, 
a lot of people could get hurt.
إذا تركنا ذلك الشيء طليقاً، فقد يتأذّى
كثير من الناس
Wenn der in der Stadt randaliert,
gibt es sicher viele Opfer.
Si lo dejamos suelto,
mucha gente se lastimará.
Si lo dejamos suelto,
mucha gente resultará herida.
Si on ne l’éloigne pas,
il risque d’y avoir des victimes.
Se lo lasciassi fare,
Se eu deixar aquilo solto,
muita gente pode se machucar.
Если его так оставить,
в городе будет много жертв.