Touya and Minori and the rest of the players in the training camp are hitting a wall with the way they fight.  And Minori's suggestion is that they introduce themselves to one another!
For example, why do you use it?
Warum benutzt du diesen Zauber denn?
Por ejemplo, ¿por qué la usas?
Par exemple, pourquoi
est-ce que tu utilises ce sort ?
Tanto per capire, perché la usi?
Por exemplo, por que você a usa?
Вот скажи, чем тебе
приглянулось это заклинание?