Bungo Stray Dogs
Set in a fictionalized Yokohama, ability users named after modern Japanese and Western literary figures wage war across rival factions — the Armed Detective Agency, the Port Mafia, the Guild, the Rats in the House of the Dead, and the Decay of the Angels. Atsushi Nakajima, expelled from an orphanage, is drawn into this conflict as the wielder of the ability 'Beast Beneath the Moonlight.'
- Genre:
- アクション / 超能力 / ダークファンタジー / ミステリー
- Medium:
- Manga / Anime / novel
Bungo Stray Dogs — Timeline18 events
Mori Ōgai Kills the Former Port Mafia Boss and Takes Command of the Organisation
Port Mafia doctor Mori Ōgai kills the former boss and assumes leadership of the organisation. Dazai Osamu, present at the scene, becomes the sole witness to the dying will. This internal coup fixes the power structure of Yokohama's underworld for years to come.
— Background established in anime season 3 and the novel Dazai, Chūya, Fifteen.
Fifteen-Year-Old Dazai Encounters Chūya Nakahara for the First Time in Suribachi City
On orders from Mori, fifteen-year-old Dazai infiltrates Suribachi City to investigate sightings of the former boss. He clashes with Chūya Nakahara, leader of the Sheep, and the case deepens into a conspiracy involving Rimbaud and the truth behind 'Arahabaki.' Their long rivalry begins here.
— Anime season 3, eps. 26–28; novel Dazai, Chūya, Fifteen.
Dazai, Oda Sakunosuke, and Sakaguchi Ango Share Their Circumstances at Bar Lupin
During this period, Port Mafia executive Dazai, low-ranking operative Oda Sakunosuke, and intelligence agent Ango regularly drink together at Bar Lupin. Despite their disparate roles within the organisation, they form an unlikely friendship — a bond that will be torn apart by the coming Mimic incident.
— Anime season 2, eps. 1–4; novel Dazai Osamu and the Dark Era.
Armed Group Mimic Clashes with the Port Mafia, Plunging Yokohama's Underworld into All-Out War
The armed group Mimic, newly arrived from Europe, raids the Port Mafia's top-security vault. Ango's complicity and government scheming lurk behind the incident, while Oda Sakunosuke is manipulated into a sequence of events that ends in the massacre of the children under his care. A three-way war engulfs Yokohama, marking a decisive turning point for Dazai.
— Anime season 2, eps. 1–4; novel Dazai Osamu and the Dark Era.
Oda Sakunosuke Storms the Enemy Stronghold Alone and Dies; Dazai Leaves the Port Mafia
Knowing he has been manipulated but having lost everything he lived for, Oda storms Mimic's base alone and is mortally wounded. With his dying words urging Dazai to 'stand on the side that saves people,' Dazai resigns from the Port Mafia — a decision that will lead him to join the Armed Detective Agency. A watershed moment in Yokohama's underworld history.
— Anime season 2, ep. 4; novel Dazai Osamu and the Dark Era.
Dazai Discovers Orphan Akutagawa Ryūnosuke in the Slums and Recruits Him into the Port Mafia
Akutagawa, surviving in the slums with fellow orphans, attempts revenge on Mafia operatives sent to silence them — only to find Dazai has already arrived ahead of him. Dazai recognises the boy's latent ability and recruits him into the Port Mafia. Akutagawa's formidable fighting capacity is shaped by Dazai's relentless training that follows.
— Flashback scenes in manga and anime.
Nakajima Atsushi Is Expelled from the Orphanage and Encounters Dazai Osamu at the Tsurumi River
Atsushi Nakajima, raised under abusive conditions at an orphanage, is expelled on suspicion of being responsible for a man-eating tiger and wanders Yokohama. Saving the seemingly drowning Dazai Osamu from the Tsurumi River draws him into the Armed Detective Agency's hunt for the very tiger he is accused of being.
— Manga ch. 1; anime season 1, ep. 1.
Nakajima Atsushi Becomes Aware of His Ability 'Beast Beneath the Moonlight' and Is Admitted to the Armed Detective Agency
Restrained from his tiger form by Dazai's ability 'No Longer Human,' Atsushi learns he is the man-eating tiger. After surviving an assassin sent for the bounty on his head and passing the Agency's entrance test, he is formally admitted as a member. Atsushi's career as an ability user begins here.
— Manga chs. 1–2; anime season 1, eps. 1–2.
Port Mafia Enforcer Akutagawa Ryūnosuke Moves to Capture Nakajima Atsushi; the Two Organisations Clash
The Port Mafia moves to seize Atsushi and the mysterious 'Book,' deploying chief enforcer Akutagawa Ryūnosuke. Their clash — Akutagawa's ability 'Rashomon' against Atsushi's 'Beast Beneath the Moonlight' — marks the first direct confrontation between the two organisations. The shared connection to Dazai as their respective mentor figure becomes a central thread of the story.
— Manga chs. 3–6; anime season 1, eps. 3–6.
North American Ability Organisation 'The Guild' Invades Yokohama to Seize the City and Capture the 'Book'
Francis Scott Key Fitzgerald, leader of the Guild — North America's largest ability organisation — arrives in Yokohama with overwhelming force to seize the 'Book.' A massive three-way war breaks out among the Guild, the Armed Detective Agency, and the Port Mafia, with simultaneous battles including the confrontation with Virginia Woolf's ability and Poe's reasoning duel.
— Manga vols. 7–13; anime season 2.
Guild Master Architect Edgar Allan Poe Challenges Ranpo Edogawa to a Rematch of Wits
Poe, a Guild intellectual and ability user, challenges Ranpo to a deduction game to avenge a defeat six years earlier, trapping Dazai inside a book world with his ability 'Confession of a Black Cat.' Ranpo wins the contest of intellect, and Poe yields the information about the Guild's weakness.
— Manga and anime season 2, mid-arc.
Nakajima Atsushi and Akutagawa Ryūnosuke Combine Forces to Challenge Fitzgerald on the Flying Fortress Moby Dick
As the Guild's mobile fortress Moby Dick threatens to crash into Yokohama, Atsushi and Akutagawa fight together for the first time despite their mutual animosity. Developing a combined technique, they defeat Fitzgerald and bring the large-scale Guild war to an end.
— Manga and anime season 2, finale.
Fyodor Dostoevsky, Head of Underground Thieves 'Rats in the House of the Dead,' Begins Moving to Seize the Collapsed Guild's Assets
Exploiting the power vacuum left by the Guild's collapse, Fyodor Dostoevsky's underground organisation 'Rats in the House of the Dead' rises to prominence. Dostoevsky sets an elaborate plan in motion to provoke the Armed Detective Agency and the Port Mafia into a war of mutual destruction, while simultaneously pursuing the 'Book.'
— Manga vol. 10 onward; anime seasons 3 (latter half)–4.
The Armed Detective Agency and the Port Mafia Unite and Successfully Capture Fyodor Dostoevsky
Acting on intelligence provided by Natsume Sōseki, the rival Detective Agency and Port Mafia form a temporary alliance. With additional cooperation from Fitzgerald, they succeed in capturing Dostoevsky and the 'Rats in the House of the Dead' ceases operations — yet Dostoevsky's true goal remains shrouded in mystery.
— Manga and anime season 4, finale.
The Ability Special Division Declares the Armed Detective Agency a Nationally Wanted Criminal Organisation Responsible for Serial Murders, Naming Them 'Decay of the Angels'
Through a scheme exploiting the power of a blank literary work held by the Ability Special Division, the Armed Detective Agency is framed as the criminal organisation 'Decay of the Angels' and wanted for serial murders. The Agency's members are forced to scatter as fugitives but gradually reunite through Ranpo Edogawa's efforts and the support of allies.
— Manga and anime season 5.
Dazai Osamu and Dostoevsky, Both Imprisoned in the Ability-Proof Prison Meursault, Engage in an Exhausting Battle of Wits Inside Its Walls
As the Decay of the Angels conspiracy unfolds, the imprisoned Dazai and Dostoevsky conduct their battle of wits face to face inside Meursault — an ability-proof prison — while simultaneously pulling strings that affect events outside Yokohama. Each tries to outmanoeuvre the other.
— Manga and anime season 5.
The Full Scope of the Decay of the Angels' Plan to Erase All Ability Users from the World Using the 'Book' Is Revealed
The full picture of the Decay of the Angels is exposed: Dostoevsky's ultimate goal is to use the blank 'Book' to erase all ability users from existence. The Armed Detective Agency regroups, and a coalition of the Agency, the Port Mafia, and former Guild members mounts a final battle to stop the plan.
— Manga final chapters; anime season 5 onward.
Nakajima Atsushi and Akutagawa Ryūnosuke, as the 'New Twin Darkness,' Surpass Dazai's Design and Each Overcome Yokohama's Crisis on Their Own Terms
Transcending the roles Dazai designed for them as the 'New Twin Darkness,' Atsushi and Akutagawa each act on their own convictions. Atsushi, shaped by his orphanage past, and Akutagawa, who sought only Dazai's approval, come to acknowledge each other as they face the greatest threat together. The central coming-of-age narrative of Part One reaches its conclusion here.
— Manga Part One, final chapters (concluded April 2026).
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