Jaken recalls that fateful day fourteen years ago, when Zero placed a curse on Rin that would make her slowly rot away to an excruciating death. The three girls search for Bokusen-Oh, who may have a lead on the whereabouts of Towa’s new weapon.
Use that head of yours to figure it out.
.استخدم عقلك لاكتشاف الأمر
Nutze dein Köpfchen,
dann sollte es dir einleuchten.
Usa la cabeza 
que tienes para entenderlo.
Usa esa cabecita tuya para entenderlo.
Tu devrais comprendre.
Usa un po' il cervello e ci arriverai da solo.
Use a cabeça para compreender.
Подумай головой и сам во всём разберись.