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.
Hey, you're that teacher's wife, right?
Du bist doch die Braut von dem Lehrer?
Dijiste que eres
la esposa del profe, ¿no?
Has dicho que eres
la esposa del profe, ¿no?
Si j’ai bien compris,
tu es la femme de ce prof ?
Ehi, hai detto di essere 
la moglie del professore, giusto?
Ei, você é a esposa
daquele professor, certo?
Значит...