Episode 26

Dazai, Chūya, Fifteen Years Old (太宰、中也、十五歳) is the 26th episode of Bungo Stray Dogs anime series. It first aired on April 12, 2019.

Synopsis
Port Mafia leader Mori Ōgai orders a fifteen-year-old Dazai Osamu to investigate the appearance of a certain individual in the Yokohama Settlement area.

Summary
A young man infiltrates a plane and kills a Port Mafia guard.

Mori and Dazai is seen in Mori's clinic. In the past, Mori is seen talking to the former Port Mafia boss, to which the latter is on his deathbed, and instructed Mori to take down Port Mafia's enemies. Mori proceeded to kill him and appointed himself the next boss per the former's orders, making Dazai a witness.

At present, Mori gives a job to Dazai to investigate someone at the Suribachi City with a Silver Oracle in exchange for giving Dazai a way to end his life comfortably.

Dazai and Hirotsu are seen at Suribachi City to investigate. Suddenly, Dazai receives a call from Mori and tells Mori that he has seen the previous boss. In the middle of the conversation, he was attacked from behind by someone. The person demands Dazai to tell him about Arahabaki - the person turns out to be the leader of Sheep, Chūya Nakahara.

Hirotsu demands Chūya to surrender, but the latter refuses to do so. The two engage in a battle, but Dazai manages to nullify his ability. Chūya attacks Hirotsu again. In the middle of the battle, an explosion appears in the middle of the city, revealing the former Port Mafia boss.

In Mori's room, Chūya is seen restrained. Mori questions him about attacking the Port Mafia guards. Chūya proceeds to ask about their investigation on Arahabaki. Mori asks Chūya if he wants to join the Port Mafia, which Chūya refuses. Chūya also learns the truth about Mori killing the previous Port Mafia boss. Mori proceeds to have Chūya in a joint investigation about Arahabaki - much against the latter's will, having his members in danger if he refuses.

Chūya offers to exchange information about Arahabaki with Mori. Mori shows Chūya their sighting of the previous Port Mafia boss at Port Mafia vault and shares information about what he knows about Arahabaki. Chūya also shares his information about the cause of the explosion at Suribachi City. Mori then orders Dazai to investigate the person responsible for the explosion together with Chūya.

Dazai and Chūya are seen together on their way to interview people who were closest to the explosion, particularly a survivor of the explosion one week ago. Suddenly, an explosion occurs nearby. The two rush to the site and see the building where the survivor resides in flames. They are then stopped by the person who did the cover-up.

Abilities

 * Upon the Tainted Sorrow
 * Falling Camellia
 * No Longer Human
 * Illuminations