The Spirit Tortoise’s head was cut off, but Ost, its familiar, is still alive. It could revive at any moment. The allied armies need to get back into fighting shape, and fast. Naofumi makes the risky move of heading onto the Tortoise’s back with only a small group, and tries to find its true weak spot.
So I want to repay him... 
I want to help him.
لهذا أردتُ أن أردّ له الجميل... أريد مساعدته
Darum will ich Meister Itsuki
meine Dankbarkeit erweisen
Por eso quiero devolverle
el favor como pueda.
Por eso quiero
devolverle el favor como pueda.
C’est pour ça
que je veux lui rendre la pareille
Quindi vorrei ripagare 
la generosità del nobile Itsuki...
Então eu quero recompensá-lo...
Eu quero ajudá-lo.
Именно поэтому…
я и мечтаю однажды отплатить ему.