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!
Take as much as you need.
Nimm dir so viel, wie du brauchst.
Toma lo que quieras.
N’hésitez pas à me demander.
Prendine quanta te ne serve.
Use o quanto precisar.
Берите сколько нужно.