YOU SAID:
my least favorite thing on earth is my brother
INTO JAPANESE
私が地球上で一番嫌いなものは私の兄弟です
BACK INTO ENGLISH
The thing I hate most on earth is my brother
INTO JAPANESE
私が地球上で一番嫌いなものは私の兄です
BACK INTO ENGLISH
The thing I hate most on earth is my brother
That didn't even make that much sense in English.