Nakajima Atsushi, a starving, homeless orphan, encounters a man floating down the river who appears to be drowning. Atsushi dives in and rescues the man, who comes to consciousness and introduces himself as the suicidal maniac, Osamu Dazai. Dazai's colleague, Doppo Kunikida yells at Dazai from across the river and ends up treating Atsushi to a meal of chazuke in a tea house. Atsushi discovers that Kunikida and Dazai work for the Armed Detective Agency, an organization of individuals possessing s
Atsushi wakes up in a dorm room owned by the Armed Detective Agency. He receives a call from Dazai, who claims that there is an emergency. Atsushi frees Dazai from a suicide attempt in a barrel and decides to look for a different job outside of the agency. Dazai offers to help him and the pair eventually runs into Kunikida who hurries them to a scene of actual emergency. A man had taken a hostage and was threatening to blow up the building. Dazai and Kunikida play rock paper scissors to determin
Higuchi Ichuyou requests help from the agency to deal with some smugglers. Kunikida warns Atsushi about someone named Akutagawa, a member of Port Mafia. Higuchi reveals herself as a member of Port Mafia and attacks Naomi. Junichirō retaliates with his ability "Light Snow" but is defeated when Akutagawa appears. Atsushi transforms into the tiger and both battle until Dazai shows up and cancels both powers with "No Longer Human" revealing he saw through Higuchi's act. Akutagawa reveals that Dazai
After the encounter with Akutagawa and Higuchi, Atsushi wakes up on the Agency's clinic where Tanizaki is shown to be healed by their doctor, Yosano Akiko, using unorthodox methods. Kunikida warns Atsushi that the Port Mafia's guerilla squad might enter the Agency and he suggests to do something before things end up in a bad manner while Higuchi calls for the members of the Black Lizard Squad (which consists of Tachihara, Hirotsu, and Gin) to infiltrate the Agency. Atsushi returns to the Agency
Atsushi is tasked to assist Ranpo, one of the Agency's most intelligent detectives to a murder case on an embankment that revolves around a dead policewoman and where they also meet Dazai. Using his special ability named "Super Deduction", Ranpo reveals that she wasn't killed by the mafia and it is rather a copycat crime committed by a police officer on the scene. The end of the episode marks the story of how the murderer got bribed by a corrupt diet member to kill the policewoman and how Ranpo
An episode coming from the first light novel: Dazai Osamu's Entrance Exam which revolves around a series of cases involving the Azure King where the usual victims are tourists taking a specific cab and never to be seen again by the public. Rokuzou, an orphan hacker who is helping Kunikida, validates a tip, and Kunikida, dragging Atsushi and Dazai in this case, go to the location where the victims are. There, they are able to save one of the victims, Sasaki Nobuko from almost drowning in a water
After getting a notification about a bomb being planted, Kunikida, Dazai and Atsushi set off to locate it. They get help from Rokuzou, Ranpo and the President in finding the location, but are interrupted from stopping the bomb from setting off by a man having the power of numbers and his partner. However, Kunikida and Dazai's partnership proves be superior and they are able to stop the blast from happening. Later, when Kunikida goes to the graves of the people who died, Sasaki also visits, claim
A normal day starts in the Agency when Atsushi asks to where Dazai went, not knowing that he was kidnapped by the mafia's newest assassin, Izumi Kyouka. Atsushi is then dragged to Yosano's shopping trip which ends with both of them aboard a train, with the doctor fascinated on his regenerative ability after the incident to Rashomon biting his leg only for an explosion to happen, which Kaiji Motojirou orchestrates. While Yosano fights with the bomber, Atsushi meets Kyouka with her terrifying abil
Now that Kyouka has been saved by the Agency, Kunikida reminds Atsushi that the girl has killed 35 people and is currently being wanted by the government. Nonetheless, Atsushi still treats Kyouka to a lot of places where she wants to go and even earns a rabbit stuff toy for her. Once they are done, Kyouka immediately heads to the police station much to Atsushi's reluctance but before he could even respond, Akutagawa stabs him with his ability and takes Kyouka by himself. Meanwhile, Dazai is stil
Dazai has a face-off with his ex-partner, Chūya, as Chūya attempts to uncover Dazai's true intentions for letting himself get captured. Meanwhile, Kunikida then locates Atsushi, while Kyōka gives him the chance to escape after she detonates explosives to sink the vessel. Kunikida urges Atsushi to jump and leave the girl behind, thinking that they cannot always save others. However, Atsushi steals his resolve and rushes to save her, believing that she, like how the Agency once took him in, can st
In the aftermath of Atsushi and Dazai's abduction, the Agency must decide what to do with Kyouka, the loose end. Meanwhile, the Port Mafia also deliberates what to do with Akutagawa, now comatose, as his enemies seek vengeance...
Francis, the leader of The Guild, a North American organization of gifted members, is the one responsible for the bounty on Atsushi's head. Fukuzawa refuses Francis's offer to buy out the Agency, but their agents begin to disappear...
On a misty night, Oda Sakunosuke, Dazai Osamu, and Sakaguchi Ango meet as always at their usual bar. For the trio of Port Mafia members, it a night spent in camaraderie like any other, but Ango vanishes that very night. Oda is given a direct order from the Port Mafia boss to find Ango, but...
The reason that Odasaku went to a certain Western style restaurant was not just because of the curry. He is having the owner watch over a group of young children who had lost their parents two years ago in the war. Odasaku is trying to track down Ango, and remembers the time they first met. Meanwhile, Dazai manages to catch one of the Mimic soldiers alive in a trap he had set. However, once he gets there, all that is waiting for him is a corpse. Another figure was also waiting for him, his subor
The Port Mafia's council of five top executives has decreed that Mimic must be annihilated. In the ensuing battle, Odasaku has a fateful encounter with Gide, the leader of Mimic, who makes a cryptic prophecy. Night falls, and the usual bar now awaits Dazai, Odasaku and Ango...
While the leaders of the Port Mafia and the gifted special operations division meet via Ango, Dazai is close to discovering the true significance of the conflict between the three groups. However, in despair, Odasaku's deaf to Dazai's entreaties not to go alone to Mimic's headquarters where Gide awaits...
Trusting in a life that doesn't require her to kill, Kyouka works her first job at the Armed Detective Agency, but the job ends in a minor disaster. As Atsushi attempts to cheer her up, the unthinkable happens--Kyouka's inactive cell phone rings, and a voice orders Demon Snow to attack Atsushi.
Mori, the leader of the Port Mafia, sends a letter to Margaret M. and Nathaniel H., threatening to destroy them and the ship they are protecting.
John S. and Lovecraft hunt down Naomi and Haruno as they flee from town. While Atsushi and Dazai wait for them to arrive at the train station, Dazai notices a shady figure stalking him.
Atsushi is abducted onto the Moby Dick. Meanwhile, Lovecraft succeeds in capturing Q. Francis F. and the Guild prepare to carry out what they call their "emergency plan."
The leaders of the Agency and the Port Mafia negotiate an alliance. Meanwhile, Dazai and Chuuya face off against Lovecraft.
Rampo receives an invitation to a detective game from none other than E. A. Poe. He's indifferent at first, until Poe reveals what the reward would be should he win.
Atsushi searches desperately for the control terminal, which he would need to stop the Moby Dick from crashing into Yokohama. He's greeted by Akutagawa and Francis, both of whom have other plans in mind.
Atsushi and Akutagawa fail to call off the Moby Dick's descent. They search desperately for other ways to protect Yokohama.
Port Mafia leader Mori Ougai orders a fifteen-year-old Dazai Osamu to investigate the appearance of a certain individual in the Yokohama Settlement area.
Dazai Osamu and Nakahara Chuuya are attacked by GSS soldiers in the middle of investigating an explosion caused years ago by Arahabaki.
Nakahara Chuuya and Dazai Osamu reveal the truth behind Arahabaki, Randou, the former Port Mafia boss and Chuuya himself.
Port Mafia executive Ace captures Fyodor, who was behind the destruction of the Moby Dick. Keeping him captured may prove to be more difficult.
The café that the Detective Agency members frequent is attacked by The Park, who are after the Guild’s property.
The Agency is tasked with finding and delivering an important document. A man is hit and killed by a truck. His identity shocks Atsushi.