Moroha once had a master named Yawaragi, who was keeping a life-threatening secret. In order to resolve the secret and protect her pupil, Yawaragi made an agreement with Jyubei.
You'll have to pay a handsome sum and 
get a new key made to take off that armor.
.عليك دفع ثمن باهظ وصنع مفتاح جديد لنزع ذلك الدرع
Um die Rüstung loszuwerden,
Para tirar essa armadura, terá que pagar
uma fortuna por uma chave.