Bungo Stray Dogs Gaiden: Ayatsuji Yukito VS. Kyōgoku Natsuhiko

Bungo Stray Dogs Gaiden: Ayatsuji Yukito VS Kyougoku Natsuhiko (外伝 gaiden meaning "side story/tale" in Japanese) is a spinoff novel of Bungo Stray Dogs written by Asagiri Kafuka with illustrations by Harukawa 35. It tells the story of the "homicide detective" Yukito Ayatsuji and his assistant Mizuki Tsujimura as they try and solve a mysterious murder case at the request of the government. Their search eventually leads them to Yukito's old nemesis and public enemy Natsuhiko Kyougoku.

A promotional PV for the novel can be found on Youtube.

Voice Cast for the PV:
 * Sasai Hiroo as Yukito Ayatsuji
 * Takahashi Rie as Mizuki Tsujimura
 * Asahina Junpei as Natsuhiko Kyougoku