YOU SAID:
hello how are you best friend
INTO JAPANESE
こんにちはあなたは親友ですか?
BACK INTO ENGLISH
Hello Are you a close friend?
INTO JAPANESE
こんにちは、親友ですか?
BACK INTO ENGLISH
Hello, are you closest?
INTO JAPANESE
こんにちは、あなたは一番近いですか?
BACK INTO ENGLISH
Hello, are you the closest?
INTO JAPANESE
こんにちは、あなたは一番近いですか?
BACK INTO ENGLISH
Hello, are you the closest?
That didn't even make that much sense in English.