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.
Sensei, you're so strong, 
it should be illegal.
سينسي، أنت قويّ جداً، هذا ليس عدلاً
Herr Rimuru ist so stark,
dass es unfair ist!
Es tan fuerte que debería ser ilegal.
Es tan fuerte que debería ser ilegal.
C’est pas juste, il est trop fort !
Il Maestro è troppo forte, dovrebbe essere illegale!
Sensei, você é forte demais,
é praticamente ilegal!
Учитель, вы до неприличия сильны!