There are many animes like the Cavalier of the City (I know it's amazing). Here are some examples: - [Steins;Gate] - Attack on Titan - Sword Art Online - A Certain Scientific Railgun - "Even a chuunibyou needs to fall in love!" (Innocence) - Death Note - The Rebel Lelouch (Code Geass) - Speed Otaku (Initial D) - Tokyo Ghoul These anime works all had plots and settings similar to those of the fallen knights in the city (I know it's amazing) and were very popular.