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.
Look, kiddos. You're dreaming if 
you think you can ever surpass me.
اسمعوا يا صغار. تحلمون لو ظننتم أنّكم
تستطيعون التفوّق عليّ
Dass ihr Dreikäsehochs mich übertrefft,
davon könnt ihr noch lange träumen.
Mocosos, están soñando
si creen que pueden superarme.
Mocosos, alucináis
si pensáis que podéis superarme.
Alors, les gamins,
c’est qui le plus fort ?
Oh, cuccioli,
Ora, criançada! Estão sonhando se pensam
que vão conseguir me vencer.
Малышня, вы со мной управитесь
лишь в самых буйных мечтах.