YOU SAID:
i will stay on this planet with you
INTO JAPANESE
私はあなたとこの惑星にとどまる
BACK INTO ENGLISH
I will stay with you on this planet
INTO JAPANESE
私はこの惑星であなたと一緒にいます
BACK INTO ENGLISH
I am with you on this planet
INTO JAPANESE
私はこの惑星であなたと一緒です
BACK INTO ENGLISH
I am with you on this planet
You've done this before, haven't you.