Rainbow's End
Vernor Vinge

“There was lots of noise and action, but if you listened carefully, you could tell that the kids in the bushes were actually playing in other universes, all choreographed so neither players nor equipment would get in each other's way. She had picked the right cover; classical anime was just too highbrow for these dorks.”

Vinge, Vernor. 2006. Rainbow's End. Tor Books.