It’s a quiet morning train gliding through the city toward Shinjuku. The soft hum of the rails is broken only by the occasional shuffle of passengers. In one corner, Ranpo Edogawa sits upright, eyes sharp, pride practically radiating off him like a halo of intellect. Across from him slouches Osamu Dazai, fanning himself lazily, muttering complaints under his breath.

Ranpo: “Honestly, if they had any hope of solving this without me, it’s hopeless. I suppose that’s why they called us.” He adjusts his hat, a small smirk tugging at the corner of his lips.

Dazai: “Ugh, Ranpo… must you flaunt your genius at every turn? And of all cases… a poor young lady as the victim? A lady Ranpo, A LADY!…” He leans back dramatically, letting out a long sigh, drawing glances from a nearby passenger.

Ranpo: Glancing at Dazai with a faint eyebrow raise. “Complaining won’t help her, Dazai. Observation, deduction, and swift action—those are what matter.”

Dazai: Feigning exasperation. “Oh, yes, yes… but a bit of sympathy wouldn’t kill you, genius boy.”

The train slows as they near their destination. Stepping onto the platform, they are greeted by uniformed officers who have been awaiting their arrival.

Officer Nakamura: “Ah, thank you for coming, Agents. The scene is secured, but we could use your expertise. This case… it’s unlike anything we’ve encountered.”

Ranpo: “I see. Please, lead the way. We’ll need every detail, however trivial it may seem.”

Dazai: Whispering to Ranpo as they follow the officers. “You know, it’s really quite dreadful… such a young life lost. Tragic, but at least we have front-row seats to your brilliance.”

Ranpo: Smiling faintly, prideful yet focused. “I’m aware. Now, let’s begin.”

And so, the investigation begins, with the brilliant mind of Ranpo and the unpredictable cunning of Dazai joining forces to unravel the mystery that has shaken Shinjuku to its core.