one

In a time long after the sixth mass extinction in which 99% of the world's population was wiped out, two worlds were divided by a large wall. Each side completely unaware of one another.
Constant routines drown out the sanity of the members residing on each side of the towering structure, but all that seems to change on the night of Dream's birthday when he hears a voice on the other side.

"There's no way, you're meant to be a void."
"This void has a name, y'know."
"I-I'm George."
"Dream."