Bungo Stray Dogs is an anime series produced by Bones Studio. The series is directed by Takuya Igarashi and written by Yōji Enokido. The fourth season of the anime, Bungo Stray Dogs: Dead Apple, was released in 2018. The anime is based on a manga series of the same name written and illustrated by Kafka Asagiri and Sango Harukawa. The series follows a group of detectives with supernatural abilities who work for the “Armed Detective Agency” and solve supernatural cases. The fourth season focuses on the battle between the agency and the “Port Mafia” to obtain a powerful ability known as “the Dead Apple.” The anime received positive reviews for its unique concept, characters, and action scenes. Bungo Stray Dogs Season 4 Episode 1: The Lone Swordsman and the Famous Detective
A deadly ceasefire is mentioned in newspapers Fukuzawa is seen read years prior. Then, in a flashback, he is seen standing over bodies with a bloody blade in his hand. Fukuzawa denies to join the military police over the phone, telling the man that he will now work alone. When Fukuzawa hears that one of her clients, a firm CEO, has been killed at her office, he rushes there to investigate. There, he encounters the victim’s secretary, who has been verifying each document for survival by placing it on the floor, as well as the suspect, who is bound and gagged next door. Fukuzawa visits the suspect, who seems to be Sakunosuke Oda, a young and skilled assassin. Then, when a teenager shows in to ask for a job, he or she makes the deduction that the secretary is the real murderer. After a brief argument with Fukuzawa, the young assassin jumps out of the room he was being held in and murders the secretary before giving himself in.
In a restaurant, the little boy introduces himself as Ranpo Edogawa to Fukuzawa. When questioned about his background, the child discusses his expulsions from employment and school as well as the passing of his parents. Despite his initial reluctance, Fukuzawa invites the boy to accompany him on his next trip so he can find a new career there.
After receiving a death threat from an unidentified “V,” Fukuzawa is recruited to find a criminal and bring him in at a theatre. They are welcomed by the manager, Egawa, who presents Fukuzawa with the note describing the crime that Ranpo predicts would take place. Fukuzawa and Ranpo question the actors, starting with the principal actor Tokio Murakami, to acquire information. They also interrogate the other performers, who believe that no murder will occur.
Ranpo, though, thinks that the note is more of a warning than a deadly threat. Fukuzawa asks Ranpo to explain what he concluded about the youngster after realising that he is unique. Fukuzawa yells at Ranpo to stop talking, accidentally pushing him back, as the boy easily reveals his mysterious and traumatic past. Fukuzawa invites Ranpo to go along on this expedition after confirming his deduction abilities.
As the audience, Ranpo, and Fukuzawa approach the theatre as the stage play is about to begin, Fukuzawa wonders why he opted to collaborate with Ranpo after promising to work alone.