I'm going to try again with the "other languages" scheme. This time, I think the format makes sense.
Right now you see me
Ahora no me miras
今、見ません
Who am I?
Rough translation (Still a valid haiku, yay!):
Right now you see me
You do not see me right now (Spanish)
Now, you don't see me. (Japanese)
Hint:
It's not a word. Well, it is a word, but it's a set of words. If you know what I mean...