YOU SAID:

me and my brother are always fighting.

INTO JAPANESE

私と私の兄は常に戦っています。

BACK INTO ENGLISH

Me and my older brother are always fighting.

INTO JAPANESE

私と兄はいつも戦っている。

BACK INTO ENGLISH

My brother and I are always fighting.

INTO JAPANESE

私の兄と私は常に戦っています。

BACK INTO ENGLISH

My brother and I are always fighting.