As Ryuunousuke Akutagawa and Nathaniel Hawthorne engage in a life-or-death battle, Chuuya Nakahara has information about The Guild's plot to destroy the Armed Detective Agency. H.P. Lovecraft and John Steinbeck also reveal their powerful abilities!
The American group of ability users known as the "Guild" appears, led by the wealthy Francis Scott Fitzgerald, who has his sights set on the Armed Detective Agency! Can Agency president Fukuzawa stop him...!? Not if Guild member Lucy Montgomery and can help it!
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. But when negotiations fail, Dazai has no choice but to infiltrate enemy territory alone to secure Q. There, Dazai runs into some unexpected trouble...until a familiar man appears before him...!!--EndFragment--
Having been kicked out of the orphanage, a despairing young man by the name of Atsushi Nakajima rescues a strange man from a suicide attempt--Osamu Dazai. Turns out that Dazai is part of an armed-detective agency staffed by individuals whose supernatural powers take on a literary bent!
Atsushi-his confidence shot thanks to Q's mental assault-is finally caught by the Guild, due to Fitzgerald's sheer physical might and Alcott's abilities. Q, left to his own devices, turns his eyes toward his next target-Lovecraft, a Guild skill user shrouded in mystery. Soon, the Guild's scheming turns the promised land of Yokohama into a sea of flames-and Atsushi is forced to stand strong once more! !--EndFragment--
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 battle when Fitzgerald enters the fray. Can Atsushi and Akutagawa counter the Guild leader's extravagant ability in time to stop the white whale's descent...?!!--EndFragment--
Regaining consciousness after nearly losing his life to Akutagawa, Atsushi is paralyzed by the thought of bringing more death and destruction down on the heads of his companions at the Armed Detective Agency and vows to run away. But before he can make good on his resolution, the Mafia sends Ryuurou Hirotsu of the merciless Black Lizard squad to storm their offices! Between the bomb-tossing Motojirou Kajii and the demure, kimono-wearing Kyouka Izumi, will the Mafia's literary giants close the book on Atsushi and the Armed Detective Agency for good?!