Dragon Books is a hobby shop run by Tatsu Yamashiro during the first incarnation of the Outsiders group. Located in Gotham City, the shop catered in Japanese-language books and literature. With a particular emphasis in Tatsu's own personal interest in Samurai and martial arts.
The shop was provided by Bruce Wayne as a front for Tatsu, who was living at the Wayne Foundation Building penthouse, despite her expressing no desire to live beyond her life as "Katana". It is believed the shop shut down when Tatsu left with the other Outsiders to tend to a civil war in Markovia.