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.
Not at all, not at all! 
I owe you my life, after all!
!إطلاقاً، إطلاقاً! فأنا مدين لك بحياتي
Ach, was denken Sie denn?
Sie haben mein Leben gerettet!
Para nada. Me salvó la vida.
Para nada. Me ha salvado la vida.
Mais pas du tout !
Je vous dois la vie, quand même !
Non è nulla di che! In fondo 
mi hai salvato la vita!
Problema algum! Afinal,
eu te devo a minha vida!
Ну что вы, что вы!
Я вам всё-таки жизнью своей обязан!