YOU SAID:
if Im not back again this tomorrow time
INTO JAPANESE
Imが明日また戻ってこなければ
BACK INTO ENGLISH
Im not coming back again tomorrow
INTO JAPANESE
私は明日また戻ってこない
BACK INTO ENGLISH
I will not return again tomorrow
INTO JAPANESE
明日はまた帰らない
BACK INTO ENGLISH
I will not return again tomorrow
You've done this before, haven't you.