Spoilers for Chainsaw Man Part 1 and Part 2.
Japanese fandom did not receive Part 2 well. This is not controversial — the sales figures reflect it, and the discussion threads from the school arc onward were not warm.
What’s interesting is that the Japanese analysis was more precise than the English version. Not “I don’t like this” but something closer to: “I can identify the exact load-bearing element that was removed.” That argument is worth laying out carefully.
Part 1’s Hidden Architecture
To understand why Part 2 didn’t work, you need to understand what Part 1 was actually doing.
Part 1 had a desire engine. Denji wanted Makima. That wanting — undignified, completely sincere, functioning as the story’s moral argument as much as its plot — pulled every scene forward. It made Denji’s interior state legible at all times. You always knew what he wanted, and you could always feel whether the story was moving him toward it or away.
Makima worked as a character because Denji’s desire made her work. Her inscrutability was coherent because his transparency was total. She could remain mysterious because he couldn’t hide anything.
Aki and Power weren’t just beloved supporting characters — they were structural nodes. Aki was consequence: the version of Denji’s future where you fight long enough and lose everything. Power was the thing worth protecting, once you stopped pretending the goal was something noble. Without both of them, the Hayakawa household couldn’t function as the emotional center the final arc needed to detonate.
Fujimoto said directly in interviews that he deliberately makes readers love characters before killing them. That this is craft, not accident. He also told his editor at the time that he designs deaths specifically around who readers would most want to survive — and then kills that person. Part 1 is the evidence of both principles working simultaneously. The Hayakawa household was built to be destroyed. Every element of it was constructed to maximize the loss when the destruction came.
What’s Missing
Part 2 Denji has no equivalent architecture. He wants things in a vague, diffuse way. He’d like to stop having his identity suppressed. He appears panel after panel with half-open mouth, flat eyes — the visual language of someone who burned out and hasn’t recovered.
That might be an accurate portrait of what happens to a person after Part 1. As a narrative engine, it doesn’t function.
A common view in extended Japanese analysis — the note.com and hatena blog discussions that ran through the school arc — was a comparison to One Piece: Luffy without the Pirate King dream isn’t interesting. The dream isn’t decoration. It’s what makes every scene point somewhere. Denji’s desire for ordinary warmth performed the same function in Part 1. Remove it and you have a character’s body moving through events.
The observation about Denji’s expression came up repeatedly. In Part 1, his face is perpetually animated — genuine terror, unfiltered delight, that particular grin. In Part 2, the expression is flat. The visual language is communicating something about his interior state. The problem isn’t that this is inaccurate. The problem is that a story needs more than a protagonist accurately depicting exhaustion.
The Character Problem
Part 2 also failed at the structural level in a specific way: none of the new characters became load-bearing.
Asa is well-written and gets genuinely interesting by the Falling Devil arc — but she operates on a parallel track that never produces the structural tension the Hayakawa dynamic produced. Yoru is interesting but a variation on a type the story has done before. The new Devil Hunter setup adds noise without the weight that Makima’s presence carried. Nobody arrives to fill the Aki-shaped hole.
Nobody was going to. That’s the real problem. The Hayakawa household took most of Part 1 to build — close to two years of real-time serialization. The attachment it generated was the result of sustained investment, carefully managed, with Fujimoto explicitly designing the characters to be loved before they were destroyed. Part 2 couldn’t replicate that process without spending the same amount of time, and doing so would mean running Part 1 again in a different register. Which would be its own failure.
Japanese fans who had followed Fujimoto from Fire Punch and Look Back made a pointed observation: he has consistently been better at concentrated forms than extended ones. His short works are nearly flawless — Look Back in particular operates with a precision that longer works rarely achieve. Part 1 worked because it had the shape of a feature film: defined beginning, middle, end, and an engine driving toward that end. Part 2 has been looking for an equivalent engine since the first chapter.
Honestly
Part 2 isn’t bad manga. Individual chapters — the Falling Devil sequence, several moments in the Aging Devil arc — are among the most visually inventive work Fujimoto has done.
But it hasn’t passed the test Part 1 passed: making readers feel the absence of specific people. Aki dead meant something that restructured the entire reading of what came before. Power dead meant something the story still hasn’t fully metabolized. The grief in Part 1 was earned over a real period of time.
Part 2 hasn’t produced anything equivalent to that. Japanese fans said so early, clearly, and the English fandom eventually arrived at the same position. The Japanese analysis was just more precise about the mechanism.
Once you see the structural argument — the engine was the desire, the desire is gone — the individual scene-level criticisms organize themselves around it naturally. That’s what the English version has mostly been arguing around the edges of without naming directly.
The center is empty. That’s the whole problem.
What the English Version Is Still Arguing Around
The English-language criticism of Part 2 has been substantial, but it’s mostly operated at the scene level. The school arc is slow. Asa and Denji don’t have chemistry. The new enemies lack the weight of Makima. The story doesn’t know what it’s doing.
These observations are all accurate. They’re also symptoms rather than causes.
The Japanese analysis named the cause earlier and more precisely: Part 1 worked because of a specific structural relationship between desire and consequence. Denji’s wanting made everything legible. Remove it and the rest of the structure loses its organizing principle. No amount of strong individual chapters can substitute for that. And no new character — however well-designed — can replace structural nodes that took two years to build.
There’s a version of a Part 2 that works. It would require Denji to want something again, clearly and specifically enough that the story has a direction. It would require the new characters to become load-bearing in ways that feel as earned as Aki and Power did. These aren’t impossible things. They’re just things Part 2 hasn’t done.
Fujimoto’s interview comment that Part 2 should be seen as “a completely separate work” from Part 1 was probably honest rather than defensive. He seems aware that he’s working in a different register. The question is whether that register eventually produces something with comparable structural integrity.
As of now, the structural argument says: the engine is still missing. Japanese fans identified this early. The story hasn’t yet answered them.
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