YOU SAID:
I am gonna stay up till midnight tomorrow night.
INTO JAPANESE
明日の夜深夜まで起きていきます。
BACK INTO ENGLISH
I will stay up until midnight tomorrow night.
INTO JAPANESE
明日の夜深夜まで起きます。
BACK INTO ENGLISH
I will wake up until midnight tomorrow night.
INTO JAPANESE
明日の夜深夜まで起きます。
BACK INTO ENGLISH
I will wake up until midnight tomorrow night.
That didn't even make that much sense in English.