Chainsaw Man Chapter 209 unleashes devastation through a single news broadcast that fundamentally rewrites the series' power structure. Yoru's tears flow as memories flood back, revealing the magnitude of what was lost when Pochita consumed nuclear weapons from existence. The War Devil's emotional breakdown signals that something far more dangerous than any Primal Devil has emerged.
Nuclear weapons represent the most dreaded weapon referenced in the title, making their shocking return through humanity's rediscovery rather than Pochita's puking. America's nuclear strike on Russia triggers Yoru's traumatic recollection of these ultimate instruments of war, instantly transforming her from a conflicted devil into potentially the most dangerous entity in Chainsaw Man's universe.
Yoru’s clash with the Falling Devil reveals what she’s truly capable of when not holding back. What seems like a fatal spear injury turns out to be a clever trick, enabling her to take down a Primal Devil with brutal precision.

The swift elimination of Falling proves that Yoru's integration with Asa hasn't weakened her combat prowess. Her enhanced mobility and weapon creation abilities suggest that coexistence with a human host has actually refined her fighting techniques. Chainsaw Man's power scaling takes a dramatic leap forward with this display.
The nuclear weapons revelation creates complex questions about Chainsaw Man's established mythology. Pochita's consumption supposedly erases concepts entirely, yet humanity has somehow recreated these devastating armaments. This development challenges fundamental assumptions about the Chainsaw Devil's ultimate abilities.
Yoru's forgotten memories returning through external stimuli suggest that erasure may not be absolute. The Four Horsemen might possess inherent resistance to complete memory deletion, allowing fragments of consumed knowledge to resurface under specific circumstances. This immunity could explain her earlier references to nuclear weapons despite their supposed nonexistence.
Character’s Position and Global Consequences in Chainsaw Man

This chapter casts real doubt over whether Asa Mitaka will make it out alive. The spear wound to her head combined with Yoru's sudden power surge suggests a significant shift in their relationship. Fiends typically gain stronger control over their host bodies following severe trauma or death.
Chapter 209 also leaves Denji in an extremely vulnerable state. The protagonist remains incapacitated with a spear through his head throughout most of the chapter. The return of nuclear weapons places Denji at the center of an escalating global conflict. His unique abilities as the Chainsaw Man make him both a target and a potential solution to the emerging crisis.
The nuclear strike announcement carries profound implications for the Chainsaw Man world. America's decision to deploy these weapons against Russia suggests escalating international tensions. The Soviet Union’s loss of the Gun Devil could be a key reason behind their sudden military escalation.
The chapter introduces potential inconsistencies regarding Yoru's knowledge of nuclear weapons. She previously claimed she’d recover nuclear weapons from Pochita, yet her shock at their reappearance suggests otherwise. This discrepancy could represent either a narrative oversight or intentional character development.

The possibility that prolonged human contact gradually erases devil memories offers compelling storytelling potential. Asa's influence might have been actively suppressing Yoru's most dangerous recollections, creating an internal psychological conflict within the series' unique bonding system.
As such, with nuclear weapons back in play, Chainsaw Man shifts from eerie supernatural terror to looming end-of-world chaos. The series approaches what could be its most devastating conflict yet. The convergence of personal relationships, global politics, and supernatural power struggles positions the narrative for explosive confrontations.