Chiikawa took ¥16.85 billion at the box office in 66 days. It started on a shelf anyone could stock

Search the full text of every case on this site and the name “Nagano” turns up exactly once. It sits in a line where Yukie Matsumoto, a sticker artist who reached ¥100,000 a month on LINE, lists her own output next to other artists. “Nagano: 73 titles. Tomoko Ishii: 672. Beni Orenji: 223.” She adds that with 27 titles of her own, she is still a beginner. In that case, written in 2023, 73 is nothing more than a benchmark.

The character drawn by the artist behind those 73 titles is now the biggest draw at the Japanese box office. “Chiikawa the Movie: The Secret of Mermaid Island” opened on July 24. In the 66 days through September 27 it took ¥16.85 billion from 11.55 million admissions, passing the ¥16.67 billion of “The First Slam Dunk” to reach 14th place all time.

The history of a national character usually begins with a pitch document at a publisher or a TV network. Chiikawa did not begin there. It began on a shelf created on May 8, 2014, the day LINE decided that anyone whose stickers passed review could sell them. On that same shelf sits a case we cover where two years of sales came to ¥1,807.

So here we lay out the twelve years from that shelf to the cinema and track what switched along the way. One thing up front: what stopped us at the end of the timeline was not the size of the box office.

From a shelf opened on May 8, 2014 to 447 screens in July 2026

Put twelve years on one page and only four switching points appear. The shelf in 2014, the dedicated account in 2020, the morning broadcast slot in 2022, the cinema in 2026. At none of those points did the artist’s output change. What changed was where the same drawings and four-panel strips were placed.

There is one row we could not add. Between 2020 and 2026, no figure that would reveal the author’s own cut has ever been published. We come back to that gap later.

What that shelf counts is not how much gets read, but how often it gets sent

The nature of the starting shelf is worth pinning down. Revenue from LINE stickers is counted two ways: packs sold outright, and sends made by subscribers on the monthly premium plan.

In the case of urajo, whose figures we record, both appear on one screen for August 2024. Sales of 2,530 packs brought ¥282,544 in direct purchases, while total distributions came to ¥322,211. Of that, ¥221,442, or 68.7%, came from premium. Stickers were sent 105,520 times that month. After roughly ten years and some 330 titles, the centre of gravity has moved from packs bought to times used.

So this shelf does not measure how much of a work gets read. It measures how many times a drawing gets pressed inside a conversation. That the starting point was here is continuous with how the containers were chosen twelve years later, and we think the connection is real. A four-panel strip and a few minutes inside a morning news programme are both formats that get touched repeatedly in daily life. The format that seats a viewer for ninety minutes arrived last in these twelve years.

On the same shelf, ¥1,807 over two years sits beside an average of ¥1.352 billion

LINE publishes the shelf’s results at each milestone. As of April 2022 there were 5 million registered creators worldwide, 15 million sticker sets on sale, and cumulative sales above ¥120 billion over eight years. The same announcement gave the distribution. The top ten creators by sales averaged ¥1.352 billion each, and 198 creators had sold ¥100 million or more.

Divide 198 by 5 million and you get 0.004%. Divide ¥120 billion by 5 million and each creator averages ¥24,000, but an average means nothing in a distribution whose top ten clear ¥1.3 billion apiece.

The bottom of that distribution is what we write about.

• Two people who listed stickers with almost no promotion took ¥1,807 over two years and about ¥1,502 over five
• Yukie Matsumoto, who reached ¥100,000 a month, did it seven years after her first release, with 27 titles and 301 followers on X
• Urajo, with roughly 330 titles over ten years, has taken ¥9.79 million in total distributions

On one shelf, ¥1,807 over two years and an average of ¥1.352 billion for the top ten are both called “creator sticker sales.”

The design of this shelf we will state plainly. It strips the entry process down as far as it can go, and in exchange it leaves the entire job of being found to the creator. Pass review and anyone can put work on the shelf, but nothing is provided to bring customers to it once the work is there. ¥1,807 is not a verdict on the work. It is close to the default value of that design.

And chiikawa did not start at the bottom of the shelf. When the dedicated account began serialising in January 2020, the artist already had 330,000 followers on X. An artist who had reached the top of the shelf with Jibun Tsukkomi Kuma, and who took a category prize at the tenth anniversary awards, released chiikawa next. Get that order wrong and the timeline stops making sense.

The output stayed four panels. Only the container got one size larger each time

The rights line reads “©nagano.” Copyright sits with the artist, and the merchandise licensing business runs through a partnership with an outside company, according to nippon.com. Publishing is Kodansha, broadcast is a Fuji TV slot, distribution is Toho.

Laid out that way, the twelve years look like a single move. Keep the output, a four-panel strip, exactly as it is, and swap the container that receives it for one a size larger. The sticker shelf, the serialised account, the comics, a few minutes inside a morning news programme, merchandise licensing, a game, the cinema. Each time the container grows, more labour from other companies gets wired to the same drawings.

What made chiikawa big was the way the containers got swapped, not any expansion of the work itself. Neither the length nor the density of the strips moved much between 2020 and 2026. What moved was how many people one strip reached, and who carried the cost of the delivery.

Of those swaps, the one we judge most effective is the slot chosen for the 2022 anime. Not a late-night half hour, but a few minutes inside the morning programme “Mezamashi Terebi.” Episode 1 aired around 7:40 a.m. Rather than seating a viewer in front of a work, the form slips into the timetable of a day, every morning, in a short burst, in the window before school and before work.

Take that slot and you lose to late-night anime on information per episode. In return, nobody has to decide whether to watch. This was a choice about frequency of contact rather than size of container, and the official account’s follower growth changed shape around it.

From 10,000 to 400,000 in 2020, then 800,000 in 2021, 1.7 million in 2022 as the anime began, 2.8 million in 2023, and about 4 million by April 2025. The yearly gain went from 400,000 in 2021 to 1.1 million in 2023. A few minutes each morning is worth almost nothing per airing, and adding almost nothing every morning produces this shape.

Four years of a few minutes each morning, then ¥2.24 billion in three days

The opening was abnormally fast. ¥2.24 billion in the first three days, then ¥4.4 billion by day 10, ¥8.07 billion by day 20, ¥10 billion by day 30, ¥16.85 billion by day 66. Join the announced milestones and divide by days and the picture looks like this.

The milestones are announced as thresholds crossed, so the gains are approximate. The shape still reads. The daily take in the opening week was about four times the rate a month later, which means a large number of people had already decided to go in the first three days. Yet from day 31 the line holds flat at ¥190 million a day, and the 36 days of the second month onward carried roughly 40% of the total. This is not a curve that harvests an opening week and stops.

From here we are speculating, but we read both ends as the product of four years and three months of mornings. The density of the opening week is the stock of reasons to go that existed before release. The long tail reflects a state where the characters keep reaching people who have not seen the film. The broadcast is still running.

One note of caution. Box office is the total value of tickets sold at cinemas, not anyone’s revenue. It splits first between exhibitors, distributor and production, and the original work’s share sits somewhere beyond that. You cannot work backwards from ¥16.85 billion to what the artist takes home.

Almost nothing in these twelve years can be reproduced as a condition

The limits come first. The timeline connects cleanly, and as a set of instructions it is nearly useless.

The denominators do not work. The number of people who put work on the shelf went from 30,000 in 2014 to 5 million in 2022 and 7.5 million in 2024, and exactly one of the characters became the year’s top-grossing film. Break an event of that probability into steps and almost no explanatory power stays with the steps.

The starting point was not zero either. Those 330,000 followers are a figure from after the shelf had already paid off. Copy only the part from 2020 onward and the part built between 2014 and 2019 is missing from the start.

On the drawing itself we state nothing, because we are not equipped to judge it. We will note that every figure in the timeline is a figure from after a container changed, and not one of them measures the work. What can be read here is a question of order.

This also explains why chiikawa is not one of our case articles. The condition for inclusion is that the person running the business has published the money. Every published figure about chiikawa belongs to some other company.

Sort the numbers by who published them and the author’s column comes up empty

Take the timeline and sort it by who released each figure.

In twelve years of record, not one figure came from the author. No royalty rate, no licensing share, no sticker distribution. Every large number was released by a company that benefits from releasing it. The author’s column stays empty.

The numbers that are public are the numbers somebody had a reason to make public. Our own aggregates sit on top of that premise, and every distribution of amounts we publish is only a distribution of the people who disclosed. The chiikawa timeline is the clearest specimen of that bias we have. The box office can be followed to the yen, while the sum reaching the author of the work behind it is unknown even to the order of magnitude.

The reverse is happening on the ¥1,807 side. Two years and ¥1,807 could be written down precisely because it is small. There is nothing to lose by writing it, writing it makes a record, and the record gets read. That is why our 425 cases are thick at the small end. The larger the amount, the more the person’s own numbers disappear.

For more of the shelf’s distribution there is how far one person can go, which aggregates monthly revenue for solo and side businesses, and the map by business type, which lines up medians. Definitions for monthly revenue and exit prices are in how to read the numbers. The source for each row of the timeline is listed at the foot of this article.

The shelf’s record still exists only on the ¥1,807 side

Having finished the timeline, the thing we sat with longest was not ¥16.85 billion. It was that beside it there is not one line the author put out. Box office, print runs, downloads: all numbers we want. All of them belong to companies doing business with the work, rather than to the business of making it.

The number of people who put work on that shelf went from 30,000 in 2014 to 7.5 million in 2024. One of them gets a timeline written about them, and the rest of the numbers go unwritten unless the person writes them. Our having an article about ¥1,807 comes down to almost nothing more than that.

Kodansha’s page for the series describes the characters as “trying to get what they want with the reward for their labour.” A work that draws the distance between labour and reward in four panels every time became a business by opening that distance as wide as it goes. We do not write that as irony. Swap the container and the distance opens, and this timeline shows that more plainly than anything else we have.

The film’s ¥16.85 billion is a fine record, but it is not the shelf’s record. The shelf’s record still exists only on the ¥1,807 and ¥9.79 million side. Next time we count, we would rather count how many people are standing on that shelf now than count another box office update.