- "This article is about the Bungo Stray Dogs Gaiden Light Novel. For the manga, see Bungo Stray Dogs Gaiden (Manga)."
Bungo Stray Dogs Gaiden: Ayatsuji Yukito VS Kyougoku Natsuhiko (文豪ストレイドッグス外伝 綾辻行人VS.京極夏彦, Bungō Sutorei Doggusu Gaiden Ayatsuji Yukito VS. Kyōgoku Natsuhiko?) is a spinoff novel of Bungo Stray Dogs (Manga) written by Kafka Asagiri with illustrations by Oyoyo.
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 Kyōgoku. 
Another Story recently received a manga adaptation, updated on  The first chapter released 1 December, 2017.
Voice Cast for the PV:
- Sasai Hiroo as Yukito Ayatsuji
- Takahashi Rie as Mizuki Tsujimura
- Asahina Junpei as Natsuhiko Kyōgoku