The City Series(都市シリーズ) is a light novel series written by Kawakami Minoru (川上 稔). It had 15 volumes published from 1997-2005 by Dengeki Bunko. It was Kawakami's debut series and it takes place in the final era of Kawakami's light novels, which include Kyoukai Senjou no Horizon and Owari no Chronicle. The first novel was illustrated by Shirou Oono (しろー大野), the second by Nakakita Kouji (中北晃二), and the rest by Satoyasu (さとやす).