idk any manga like this but there is this video game with a similar plot to that called "me and you and her"
So I'm really curious about this, cause this is my jam. What else do you remember? Was it black and white or color? Do you remember what the cover/picture looked like? How popular was it? What did the characters look like?
hm it was a manga and i think mc or ml was like a different human race or something. dont remember the cover or character design unfortunately
Do you remember if the art style was older or newer?
i dont, it wasnt really distinctive? but it wasnt like 90s old
it was about these two people from different dimensions who meet on a school rooftop. they could only meet by teleporting to each other's world, but for some reason other ppl cant see the person who crossed over. at one point, one of the characters could only be heard but not seen? and then something about the border between dimensions being opened and how the couple could see each other in each other's worlds.
err i hope this helps