"The Case Files of Karasuma Kyoko"[3]) is a Japanese manga series written by Oji Hiroi and illustrated by Yūsuke Kozaki.

Karasuma Kyoko no Jikenbo is set in Asakusa, Tokyo in the year 2050, where entities known as Oni, ogres of Japanese mythology, live alongside humans.

With power and anger accumulated, the Oni united under the OOO (Organization of Ogrecide), decide to break a millennial pact signed with humans, and declare war on them.

Written by Oji Hiroi and illustrated by Yūsuke Kozaki, Karasuma Kyoko no Jikenbo was first published as part of Gentosha's BStreet manga anthology in 2002.

[23] Directed by Keiji Korogi and produced by Haruo Kawashima,[24] the series was released into 8 chapters for a total of 86 minutes.