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.
Don't worry. I called it a 
test, but it's a fun game.
لا تقلقوا. أطلقتُ عليه امتحاناً لكنّه
في الواقع لعبة ممتعة
Macht euch keine Sorgen.
Es heißt Test, aber es ist ein lustiges Spiel.
No se preocupen. La llamo prueba,
pero será un juego divertido.
Tranquilos. La llamo prueba,
pero será un juego divertido.
Rassurez-vous,
c’est juste un petit jeu.
State tranquilli!
Não se preocupem. Chamo isso
de prova, mas é um jogo divertido.
Но не бойтесь!
Тест — это весёлая игра.