The second episode of Bungo Stray Dogs Season 4, titled continues the "Untold Origins of the Detective Agency" arc, delving deeper into the formative relationship between a young Ranpo Edogawa and a stoic Yukichi Fukuzawa . A Masterclass in Psychological Manipulation

: Fukuzawa hands Ranpo a pair of ordinary thrift-store glasses, lying to him that they are a special tool designed to activate his dormant supernatural ability.

The episode centers on a pivotal moment for Ranpo: his transition from a confused, alienated teenager to a confident detective. Fukuzawa, recognizing that Ranpo's genius makes the world look like a "gray-clad" place filled with "monsters" he cannot understand, decides to intervene.

The episode highlights the deep psychological scars of both leads. Fukuzawa admits to his own dark past as a government assassin who once found pleasure in killing. Seeing Ranpo's vulnerability, Fukuzawa realizes that "a detective must be armed" with protection, planting the conceptual seed for what would become the . A Dangerous Cliffhanger

: While the stage murder was a distraction, a real crime occurred behind the scenes. The stagewright was found murdered in a locked room. The Founding Spark of the ADA

: Donning his new glasses, Ranpo quickly deduces that the "murder" on stage was a elaborate fake—the actor faked his death as part of a larger ruse.

The Day Is a Dream, The Night Is Real: Bungo Stray Dogs Season 4, Episode 2