Hunting Dogs Arc

Hunting Dogs Arc (猟犬編,) is the sixth story arc of Bungo Stray Dogs. It focuses on the introduction of a new group, the Hunting Dogs.

Synopsis
After the Armed Detective Agency were framed as terrorists, a military unit called Hunting Dogs was dispatched to pursue them. In their pursuit of the agency members, the fifth and the last Hunting Dogs member was also revealed.

Summary
Inside Mushitaro Oguri's transport arrest vehicle, a man shoots the driver and reveals himself to be Nikolai Gogol. He then introduces the group Decay of Angels.

Armed Detective Agency Frameup
A month after the cannibalistic mutual destuction conspired by the Rats in the House of the Dead, the Armed Detective Agecy receives a Birch bow of exorcism, for their contributions to the society. During this time, the agency received an emergency request from the government and learns about the Decay of Angels being a murder society and the brutal murders that took place. Ranpo refuses to take on the request - as Mushitaro's final words to him, however Fukuzawa states that they will pursue the killer. Meanwhile, Dazai was arrested by Saigiku Jōno for accounts of his crimes. Gogol, on the other hand, manages to disguise himself as a government worker, securing intel and cover-ups of deeper details of their actions later uncovered by Ango Sakaguchi

Eventually, Gogol holds Tonan and various government officials hostage, an incident that goes awry for the Armed Detective Agency due to the power of the Book. While Ranpo tries to find a clue about the Decay of Angels' goals, he sees a heavily injured Santōka Taneda. Eventually, Taneda shares his knowledge about the Decay of Angels and the ability to obtain informatio by one of its group member. He further shares a page have taken from the book once the Decay of Angels got hold of it.

The agency takes on a move to rescue the hostages with Atsushi taking the first move however he was intercepted by Gogol. The two fought resulting to Atsushi being injured. The remaining agency members arrive at the scene. From the outside of the location, military police can be seen monitoring the situation inside and carefully spies on the people with white hoods responsible for the hostage. The agency members manages to arrive outside the door where the hostages are being held. Gogol starts the torture and later on, the white hoods reveals themselves to be the Armed Detective Agency, much to the latter's confusion and shock. Gogol, on the other hand, is seen tied up and tortured during the process.

Impact

 * Nikolai Gogol was introduced.
 * The agency were framed as terrorists.