YOU SAID:
I leave for Seoul in nine days
INTO JAPANESE
9 日間でソウルをうけたまわりましょう
BACK INTO ENGLISH
9 days in Seoul to leave
INTO JAPANESE
残してソウルで 9 日間
BACK INTO ENGLISH
9 days in Seoul, leaving
INTO JAPANESE
残して、ソウルで 9 日間
BACK INTO ENGLISH
9 days in Seoul, leaving
That didn't even make that much sense in English.