YOU SAID:
He ain't your friend brother.
INTO JAPANESE
彼はあなたの友達の兄弟ではありません。
BACK INTO ENGLISH
He is not your friend's brother.
INTO JAPANESE
彼はあなたの友達の兄弟ではありません。
BACK INTO ENGLISH
He is not your friend's brother.
Okay, I get it, you like Translation Party.