YOU SAID:

i can stay awake for days if that's what you want

INTO JAPANESE

それがあなたが望むなら、私は数日間起きていることができます

BACK INTO ENGLISH

If that is what you want, I can stay awake for several days

INTO JAPANESE

それがあなたが望むものなら、私は数日間起きていることができます

BACK INTO ENGLISH

If that is what you want, I can stay awake for several days