YOU SAID:

no one cared who I was until I put the mask on

INTO JAPANESE

私がマスクを着けるまで、誰も私が誰であるかを気にしませんでした

BACK INTO ENGLISH

No one cared who I was until I put on the mask

INTO JAPANESE

私がマスクを着けるまで、誰も私が誰であるかを気にしませんでした

BACK INTO ENGLISH

No one cared who I was until I put on the mask