Hiiro learns the magic spell of the Kokuu blade, a weapon which will strike an enemy from afar.  Hiiro is far too terrible a swordsman to put it to use, but Master Theo notices that he has incredible power.  Theo realizes that not only is Hiiro keeping Dagan Zot's heart in check, Dagan Zot is the only thing keeping Hiiro's heart from going out of control...
There's nothing that can be 
done with that evil dragon.
لا يمكن فعل شيء أمام ذلك التنين الشرير
Gegen diesen bösen Drachen
sind wir nämlich machtlos.
No puede hacerse nada con el dragón maligno.
No puede hacerse nada con el dragón maligno.
Ce dragon ne peut pas être vaincu.
Un drago malvagio del genere... 
mica lo ferma qualcuno, eh!
Não há nada o que possamos fazer
 contra aquele dragão maligno.