YOU SAID:

big brother, we must fight to the death.

INTO JAPANESE

兄貴、我々 が死ぬまで戦う必要があります。

BACK INTO ENGLISH

You must fight until big brother, we will die.

INTO JAPANESE

兄貴まで戦う必要があります、我々 は死ぬでしょう。

BACK INTO ENGLISH

We must fight until my brother die?

INTO JAPANESE

私たちは私の兄の死ぬまで戦う必要がありますか。

BACK INTO ENGLISH

You must fight until we die for my brother.

INTO JAPANESE

私の兄の死ぬまでを戦う必要があります。

BACK INTO ENGLISH

My brother's death must be combated.

INTO JAPANESE

私の兄の死を戦う必要があります。

BACK INTO ENGLISH

You need to fight my brother's death.

INTO JAPANESE

私の兄の死を戦う必要があります。

BACK INTO ENGLISH

You need to fight my brother's death.