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.
This might be the strongest 
ability out of the five of them.
قد تكون هذه القدرة الأقوى من بين الخمسة جميعهم
Wenn man es nüchtern betrachtet,
hat sie die stärkste Fähigkeit der Kinder.
Podría ser la habilidad
más fuerte de los cinco.
Podría ser la habilidad
más fuerte de los cinco.
C’est peut-être elle qui a le pouvoir
le plus dangereux des cinq.
Forse il suo potere è il più forte, 
tra quelli di questi ragazzi.
Essa deve ser a habilidade
mais poderosa entre os cinco.
Быть может,
среди детей её способность сильнейшая.