Out of millions of companies in Japan, only one is registered as a "Ghost Corporation." Although they barely make enough money to keep their lights on, the Yuugen Company is the only force protecting Tokyo from vampires, curses, and all forms of specters. Led by the competent but brash Ayaka Kisaragi, the Yuugen Company will take on any job to keep their business running for another day. [Written by MAL Rewrite]

Yuugen Kaisha was released on DVD in North America as Phantom Quest Corp. by Geneon Entertainment on November 21, 2000.