Description：City Series summary: After the world was recreated countless times, a world that would not be destroyed was created. This marked the beginning of the City era.From Berlin to Detroit, this series tells the stories of the unique cities that came to be in that world.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.