YOU SAID:
What are you doing, step-brother ?
INTO JAPANESE
あなたは何をしているのですか、義理の兄弟 ?
BACK INTO ENGLISH
What are you doing, brother-in-law? ?
INTO JAPANESE
義理の兄弟、何してるの? ?
BACK INTO ENGLISH
Brother-in-law, what are you doing? ?
INTO JAPANESE
義理の兄弟、何してるの? ?
BACK INTO ENGLISH
Brother-in-law, what are you doing? ?
That didn't even make that much sense in English.