Teito Monogatari Gaiden (帝都物語外伝) is a Japanese horror/dark fantasy film. It is a spin-off of the Teito Monogatari franchise. It is not based on the original novel, but rather adapted from a side story novel, Karakuri Doshi (which occurs in contemporary times). Like the animated adaptation which preceded it, the film is much darker, more violent and sexualized than its predecessors, and deviates greatly from its source material.