YOU SAID:
"Please wait here until I come back."
INTO JAPANESE
「私が戻ってくるまでここで待っていてください。」
BACK INTO ENGLISH
"Please wait here until I return."
INTO JAPANESE
「私が戻るまでここでお待ちください。」
BACK INTO ENGLISH
"Please wait here until I return."
Come on, you can do better than that.