With only minutes to stop the Moby-Dick from crashing down on Yokohama, Atsushi encounters his nemesis, Akutagawa! However, the face-off turns into a three-man

Atsushi's far-fetched idea to form an alliance with the Mafia results in a summit between crime boss Ougai Mori and Armed Detective president Yukichi Fukuzawa.

The Armed Detective Agency's latest case brings them to the floating city Standard Island, a strange man-made vessel and a resort for the wealthy off the coast

What if the Port Mafia's attack dog, Ryuunosuke Akutagawa, had joined the Armed Detective Agency? Likewise, what if Atsushi Nakajima belonged to the Port Mafia?

As Kyouka fights her past demons, the threat of a three-way war between the Armed Detective Agency, the Guild, and the Port Mafia looms. With each side fortifyi