Seiichi meets the extremely eccentric students of F-class and gets stuck playing the straightman before the class' old teacher, Beatrice, suggests mock battles so Seiichi can assess their abilities.
Okay!
Jawohl.
-¡Sí!
-¿De verdad entendiste?
-¡Vale!
-¿Lo has entendido de verdad?
– D’accord !
– Tu as vraiment compris ?
Va bene!
Tá!
Хорошо!