YOU SAID:
What are you doing step brother?
INTO JAPANESE
ステップ兄弟は何をしていますか?
BACK INTO ENGLISH
What are your step brothers doing?
INTO JAPANESE
あなたのステップ兄弟は何をしていますか?
BACK INTO ENGLISH
What is your step brother doing?
INTO JAPANESE
あなたのステップ兄弟は何をしていますか?
BACK INTO ENGLISH
What is your step brother doing?
That didn't even make that much sense in English.