Episode 5

Power makes good on her offer and lets Denji grope her, but the encounter ends in anticlimax when padding tumbles out of her chest. The boy is left wondering whether the thrill he chased was ever worth the chase itself. His gloom carries into work, where Makima coaxes out the reason and counters with a lesson: pleasure deepens with familiarity. She guides his fingers across her own hand, sinks her teeth into one, and presses his palm to her chest before springing her real purpose on him.

Her request is enormous. She wants the Gun Devil dead, a creature that surfaced in America over a decade earlier and has eluded everyone since. Success would earn Denji any single wish he names. Makima recounts how spiraling fear of firearms birthed the entity during a mass shooting overseas, an event tied to young Aki losing his family. A snowball game with his brother Taiyo ends moments before their home is obliterated, one casualty among more than a million claimed in a five-minute massacre.

To track the monster, hunters collect the bullet-like fragments it sheds, scraps of flesh that empower any devil that swallows them and eventually reassemble into the source. A lead points Division 4 toward Hotel Morin, where civilian hunters have already died. Himeno sweetens the assignment by pledging a passionate kiss to whoever fells the devil, and Denji charges in. Inside, the team meets a creature Power halves with a blood blade, only for the corridors to start folding back on themselves, stranding everyone on a floor that refuses to end.

Makima formally tasks Denji with destroying the Gun Devil, framing it as the deadliest quarry in the profession and attaching the promise of one granted wish. The episode roots the devil's birth in humanity's dread of guns and stages Aki's childhood tragedy as the human cost of that terror. It also establishes the mechanic of the scattered flesh pieces, the engine that will drive the hunt going forward. Himeno's reward offer redirects Denji's motivation, and the hotel sweep introduces the spatial trap of the Eternity Devil, whose looping floors close the episode on a cliffhanger.

The installment carries the Japanese title Jū no Akuma, rendered as "Gun Devil," and bridges the tail of the Bat Devil arc into the opening of the Eternity Devil arc. Its events draw from the manga's twelfth through fifteenth chapters. The broadcast opening theme is "Kick Back," while the closing track for this entry is "In The Back Room." The episode also marks the first appearance of Kishibe, shown in flashback.