YOU SAID:

I will have to use my stand's secret power

INTO JAPANESE

スタンドの秘密の力を使わなければなりません

BACK INTO ENGLISH

You have to use the secret power of the stand

INTO JAPANESE

あなたはスタンドの秘密の力を使わなければなりません

BACK INTO ENGLISH

You have to use the secret power of the stand