Bungou Stray Dogs 4th Season Episode 1 Apr 2026

: The use of monochrome visuals throughout the episode serves to highlight the "colorless" world Ranpo perceives before meeting Fukuzawa.

: The episode features a young Sakunosuke Oda as a cold, efficient teenaged assassin, paralleling the nihilistic views later seen in Dazai. Key Episode Details Information Title "The Lone Swordsman and the Famous Detective" Release Date January 4, 2023 Source Material The Untold Origins of the Detective Agency (Light Novel) Opening Theme "True Story" by SCREEN mode Ending Theme "Shirushi" by Luck Life Analysis & Visual Style Bungou Stray Dogs 4th Season Episode 1

: A 32-year-old Yukichi Fukuzawa , working as a stoic freelance bodyguard to distance himself from his past as a government assassin, encounters a 14-year-old Ranpo Edogawa at a crime scene. : The use of monochrome visuals throughout the

Set roughly 12 years before the main series, the episode is presented in a cinematic grayscale "noir" style. Set roughly 12 years before the main series,

: Fukuzawa is stunned by Ranpo's deductive power. Despite his desire to work alone, Fukuzawa takes the boy under his wing, promising to help him find work if he assists with a death threat case involving a theater performance.

: Despite the focus on mystery, the episode features high-quality animation for combat scenes, particularly involving young Oda.

: This arc establishes the "father-son" dynamic between Fukuzawa and Ranpo, explaining why Ranpo believes his intelligence is a supernatural ability.