Edgar Allan Poe/Synopsis

History
Six years ago, Poe was beaten by Ranpo Edogawa in an investigation competition. The defeat led to him withdrawing himself from his personal connections and becoming extremely secluded and depressed. However, this defeat also inspired him to take back the life that he felt Ranpo had stolen from him.

At some point, Poe later joined the gifted organization known as the Guild and came to Japan in order to challenge Ranpo directly.

The Guild Arc
During the three-way conflict among the Armed Detective Agency, the Port Mafia, and the Guild, Poe sends Ranpo a letter inviting him for a challenge. When Ranpo and Akiko Yosano show up, Ranpo asked who Poe is. Much to Poe's horror, Ranpo did not remember who he was. Afterward, Poe presented Ranpo and Yosano with a novel that he wrote, telling Ranpo and Yosano that if they were able to solve the mystery behind the murders in the novel, he would tell them about the Guild's weakness. When Ranpo asked him why he would care about something so pointless, Poe said that the only thing worth admiring in the world was Ranpo's Super Deduction, much to Ranpo's delight. Ranpo and Yosano then begin to read the novel. However, Poe used his ability and transported Ranpo and Yosano into the setting of the novel.

As time passed and it appeared that Ranpo and Yosano seem to have made no progress in solving the mystery, Poe stated that Ranpo will never be able to solve the mystery, and declared that the novel was his revenge on Ranpo. When Yosano was murdered in the novel, Poe rejoiced and said that Ranpo would be lost in his novel forever if he could not solve the mystery.

However, Ranpo and Yosano immediately returned from the world of the novel afterward, having solved the case. When Ranpo revealed the answer to the mystery, Poe was devastated. However, Ranpo revealed that he still remembered their match from six years ago, stating that that was the first time he had been pushed to such an extent by another detective. As Ranpo left, Poe told himself that he still had a lot of work to do.

After the Guild War, he appears at the Agency's party, having brought over his newest manuscript for Ranpo to read after the latter said that he wanted to see them. Ranpo urges him to come inside the room, much to Poe's timidness and apprehension given that he came from an enemy organization. Ranpo cuts him off, asking him to stay put and wait for him to finish his conversation with the others. Kenji approaches him and asks if he likes to have some drinks while waiting. Poe mutters to himself on what kind of drinks are served at such kinds of events, upon which Kenji remarks that he cannot hear him. In the end, Poe tells Kenji that he does not need anything and anxiously waits amidst the commotion.

The Guild Aftermath Arc
Louisa May Alcott approaches Poe and asks him to help solve the case of T. J. Eckleburg murdering his co-worker for her and Francis Scott Key Fitzgerald. Even though Poe did not want to be involved with the Guild any longer, he agrees to help Alcott, considering her as a "comrade in shyness". Later, Poe brings the information of the case to Ranpo in the form of a mystery game, asking him to solve the case.

Cannibalism Arc
During the events of cannibalism, Poe assists Ranpo by writing a mystery novel where, in a cast of a thousand people, half of them are murderers. Ranpo uses Poe's book to transport Chūya Nakahara and himself into the world within. There they can battle on an even playing field since the novel contains a world with no abilities. Once the two enter the novel, Poe remarks that even Ranpo would have a difficult time escaping and basks in his possible victory against his rival. Nevertheless, Poe wonders what he shall do from then on if Ranpo is gone.

Decay of Angels Arc
On his way to an appointment at a tower, Poe encounters Ranpo, who instantly deduces his reason for being at the place. He then enlists Poe's help in finding the Rats' "cleaner" at the viewing platform, whom Ranpo believes is the one who manipulated the information and data that previously tricked him. The only hint they have is a file on the Cleaner and his appearance.

After an hour has idly passed by, Ranpo suggests that they talk about something interesting, to which Poe tells him about an unsolved murder case: an author named Kindaichi was killed using the same method he employed in the manuscript he was working on. The resolution to the case is written on the work's unreleased final volume, which was suspectedly stolen by the killer at the crime scene. Ranpo regroups with Poe and looks at the murder mystery, upon which he announces that he has solved it, much to Poe's chagrin.

Ranpo also correctly figures out that the culprit has sold the final manuscript to Poe after the latter won it at an auction, which explains his appointment at the tower. He then tells Ranpo that the person he shall meet with is carrying a red envelope, which Ranpo notices perched by the window. As they claim it, a person falls off the tower and dies, whom Poe recognizes as the Cleaner himself.

When Poe and Ranpo head down to the body, Minoura and the police arrive, giving Ranpo the assurance that the case is not a suicide, given that the culprit notified the police beforehand. Moreover, as they deduce the body's shoes, Ranpo deduces that the body is not the Cleaner but rather a decoy to camouflage himself. He proceeds to bring out his glasses to wrap the case up with Super Deduction, much to Poe's anticipation. However, to his puzzlement, Ranpo admits to them that he cannot determine the culprit's location.

Poe worries about Ranpo who sits idly ever since he saw the body. He then approaches and encourages the great detective, only for Ranpo to enthusiastically give up and head back to the Agency office. Later, Poe scans through the final manuscript in hopes of finding any clue that might help Ranpo solve the case. He notices an ink blot at the final page of the manuscript and, upon close inspection, sees that the page is a mere photocopy. As he wonders about it, he receives a phone call, who turns out to be Ranpo in order for Poe to listen in on his conversation with Mushitaro Oguri.

Thanks to the phone call, the police blocks their vehicle, but the extractor invokes his diplomat rights and reveals having an unloaded gun, allowing him and Mushitaro to get away from the police. Nonetheless, after being instructed by Ranpo, Poe sends a novel to Mushitaro that transports him and Ranpo to a recreated crime scene of Kindaichi's murder.

After Ranpo's confrontation with Mushitaro in the novel, Mushitaro surrenders to the police and gradually revokes his ability. Poe informs Ranpo that the body pushed off the tower turns out to be a dummy that does not possess any organic wounds. He further suggests that Mushitaro may have never killed anyone in the first place.

Later on, as the Agency is wanted for terrorism and framed as the Decay of Angels, Poe is sought by Ranpo to help rescue the Agency members targeted for assassination. As such, Poe dons a disguise to accompany the detained Yukichi Fukuzawa to a rooftop together with a masked Ranpo, where they soon discard their disguises and explain how they collaborated to get the targeted Agency members to safety.

Poe reveals having played an active part in sniping to have Ranpo rescue Doppo Kunikida, preparing the vehicle that led to Ranpo's rescue of Yosano from her execution, and having Katai Tayama transported to a safe setting after being tossed at with a phone. Though his explanation is cut off by Ranpo, Poe expresses his willingness to help in the case, similar to the others whom Ranpo assures are awaiting the President's orders. Fukuzawa then instructs Ranpo to crush the case, much to the great detective's thrill.