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...
No. In the end, teaching 
the blade was all I could—
—كلّا. فكل ما كان بإمكاني تعليمه هو المبارزة
Nein, letztendlich konnte ich ihm
nur ein Schwertkampf-Lehrer …
No… al final, 
solo podía enseñarle la espa…
No... al final, 
solo podía enseñarle la espa...
L’art de l’épée est tout
ce que je peux lui apprendre.
No, ho solo fatto l'unica cosa che potevo fare: 
insegnargli l'arte della spada.
Não. No fim das contas, ensinar
 a arte da espada foi tudo—