Is Demon Slayer’s ‘All-Time #1 Box Office’ Really Proof It’s the Best Ever? 5ch Debates

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The story

The theatrical version of Demon Slayer holds the record for Japan’s highest box office gross of all time, but that number sparked debate on 5ch’s Nandemo Jikkyo G board (a general live-discussion board) over whether it really makes the film “the most interesting work in Japanese history.” Posters pushed back one after another, arguing that box office revenue is skewed by inflation, ticket sales figures, and repeat viewers buying tickets again just for merchandise, so it isn’t a straightforward measure of popularity or quality. The thread brought up comparisons with Spirited Away, the long-reigning former #1, and traded analogies like Cup Noodle — “best-selling doesn’t mean best-tasting.”

What people said

1AnonymousSep 1, 2026 18:29
Is that really true, though?
2AnonymousSep 1, 2026 18:30
The Cup Noodle Theory
8AnonymousSep 1, 2026 18:36
Re: #2
Burgers and Coke, more like.
92AnonymousSep 1, 2026 19:21
Re: #2
Other movies cost the same price and take the same effort to watch. Are you dumb? Have some shame.
3AnonymousSep 1, 2026 18:30
It just got watched a ton of times. By that logic, Shamu-san's videos (a YouTuber whose clips rack up huge view counts) would count as the most interesting content out there.
5AnonymousSep 1, 2026 18:31
Re: #3
Isn't that actually just… good, though?
70AnonymousSep 1, 2026 19:12
Re: #3
People watched it a lot because it's actually good.
4AnonymousSep 1, 2026 18:30
Fine by me.
6AnonymousSep 1, 2026 18:34
Re: #4
Can an anime movie that's just one slice cut out of a long-running manga really be the most interesting thing of all time?
10AnonymousSep 1, 2026 18:36
Re: #6
It delivered the results, so what can you do.
7AnonymousSep 1, 2026 18:34
By that logic Zelda: Tears of the Kingdom would be the greatest game in the world.
11AnonymousSep 1, 2026 18:37
Re: #7
A Link to the Past or Ocarina of Time are definitely more fun than that.
13AnonymousSep 1, 2026 18:39
Re: #10
Even calling it the all-time #1 in box office revenue, remember the currency has inflated. Movies you could once watch for 100 yen a ticket now cost around 2,000 yen. Of course the total revenue is going to climb.
15AnonymousSep 1, 2026 18:41
Re: #13
Ah, that's the point you were making. Attendance numbers might be a clearer metric.
17AnonymousSep 1, 2026 18:47
Re: #15
Back when Japan was poorer, people barely had the spare cash to go see movies in the first place. These days the same person goes to see the same movie multiple times for other reasons, like merchandise. So attendance numbers ≠ quality either.
23AnonymousSep 1, 2026 18:49
Re: #17
Well, back in the day theaters didn't clear the audience between showings, so some people would just sit there watching the same film on repeat from morning to night.
25AnonymousSep 1, 2026 18:50
Re: #17
Back then people were told to grind it out until they could afford to eat tonkatsu every day.
28AnonymousSep 1, 2026 18:53
Not the most interesting — just the most popular.
34AnonymousSep 1, 2026 18:56
Re: #28
I'd buy 'most popular right now' or 'the biggest trend right now,' but there's no way it's the most popular of all time. I doubt Demon Slayer's popularity will still be around in ten years, whereas Ghibli's and Kurosawa's popularity will probably still be around in fifty.
61AnonymousSep 1, 2026 19:06
Re: #34
Kids these days don't even know who Kurosawa is.
62AnonymousSep 1, 2026 19:07
Re: #34
Ghibli isn't even popular with young people anymore. It failed to cross generations.
31AnonymousSep 1, 2026 18:55
Demon Slayer is the most popular Japanese movie overseas too, so no argument — it's the greatest Japanese film in history, hands down.
46AnonymousSep 1, 2026 19:00
Re: #31
Demon Slayer might have the biggest instantaneous peak, but for lasting popularity directors like Yasujiro Ozu or Kenji Mizoguchi rank higher.
39AnonymousSep 1, 2026 18:58
Spirited Away, One Piece, Detective Conan, Bayside Shakedown — they're all boring anyway. Demon Slayer deserves the top spot.
47AnonymousSep 1, 2026 19:01
Re: #39
I'd have figured Demon Slayer fans would also be into Conan. Surprising.
48AnonymousSep 1, 2026 19:01
The only one allowed to say 'sales have nothing to do with quality' is #1, Demon Slayer. When anything ranked below it says that, it just sounds like sour grapes.
51AnonymousSep 1, 2026 19:03
Re: #48
Whose side are you even arguing from? It's pretty bad if a fan is the one saying that.
53AnonymousSep 1, 2026 19:03
Re: #48
I'm just a viewer with zero stake in this, so I've got every right to say it.
52AnonymousSep 1, 2026 19:03
Anime movies are doped up on bonus-goods incentives — same trick as CD sales for Akimoto-produced idol groups (bundled event tickets, handshake vouchers, etc. driving repeat buys).
56AnonymousSep 1, 2026 19:04
Re: #52
That comparison really lands. They're winning on something outside the actual content.
89AnonymousSep 1, 2026 19:19
I think the Cup Noodle Theory nails it best.
It's the best-seller.
Whether it's the best-tasting is up for debate.
But it's liked by a lot of people.
91AnonymousSep 1, 2026 19:21
Re: #89
Except movie tickets are all the same price, whereas instant noodles or burgers come cheap or pricey.
95AnonymousSep 1, 2026 19:21
Re: #89
Honestly it's not even intuitive to me that Cup Noodle is the best-seller in the first place.
100AnonymousSep 1, 2026 19:23
Re: #89
Other movies cost the same price and take the same effort to watch. Are you dumb? Have some shame.
102AnonymousSep 1, 2026 19:24
It's funny that people are still salty about Demon Slayer overtaking Spirited Away. Say whatever you want, but for movies box office is everything — Demon Slayer takes #1, Spirited Away is #3.
That order is never changing.
108AnonymousSep 1, 2026 19:27
Re: #102
Box office being 'everything' only matters to the people who made the movie.
110AnonymousSep 1, 2026 19:27
Re: #102
Spirited Away at #1 feels like, sure, I guess…? But Demon Slayer at #1 just feels flat-out wrong.
117AnonymousSep 1, 2026 19:32
Re: #102
Demon Slayer hasn't won any film awards, has it.

Background and Key Points of the Debate

Demon Slayer: Kimetsu no Yaiba – Mugen Train, released in 2020, overtook the long-reigning Spirited Away to become Japan’s all-time #1 domestic box office earner. Japan’s box office rankings are a simple comparison of nominal yen totals with no inflation adjustment, so films from eras with higher ticket prices structurally tend to post bigger numbers. Where the thread split was over whether to treat that raw revenue figure as proof of quality, or to discount it for other factors like attendance numbers, repeat-viewer rates, and merchandise purchases. As with the comparison to Cup Noodle sales, a fair number of posters argued that selling well and being genuinely good aren’t the same thing.

※This article is excerpted and summarized from the 5ch (Nandemo Jikkyo G) thread “[Mystery] A ‘man-san’ (mildly mocking 5ch slang for a female poster) claims: ‘Demon Slayer’s movie is #1 in all-time box office revenue. So that makes it the most interesting film in Japanese history, right?’ ← this.”

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