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!
Maps written on papyrus and bark 
simply don't last long enough.
Auf Pergament und Rinde geschriebene
Karten halten nicht sehr lange.
Los mapas dibujados en papiros y 
cortezas no duran mucho tiempo.
Le parchemin ou l’écorce
ne sont pas suffisamment résistants.
Le mappe scritte su papiro o corteccia 
non durano abbastanza a lungo.
Mapas escritos em papiro
 não duram muito.
Здесь почти все карты
 на коже и пергаменте… 