YOU SAID:
Why do you wanna do this to me?
INTO JAPANESE
なぜあなたは私にこれをしたいのですか?
BACK INTO ENGLISH
Why do you want me to do this?
INTO JAPANESE
替わろうか?
BACK INTO ENGLISH
Do you want me to do?
INTO JAPANESE
替わろうか?
BACK INTO ENGLISH
Do you want me to do?
That didn't even make that much sense in English.