Japan publishes more than 10,000 manga titles a year, according to Japan House London. Almost none of them will ever become an anime.
Animating even a great manga takes money, time, and a workforce the industry doesn't currently have enough of.
A record market running on empty
2025 made that shortage impossible to ignore. Japan's anime market closed the year at a record 3.8 trillion yen, roughly 25 billion dollars, according to the Association of Japanese Animations. In the same 12 months, Teikoku Databank counted 8 Japanese anime production companies that shut down or filed for bankruptcy, tying the worst pace of closures in a decade. The trade press started calling it a "profitless boom": record demand, and a production system too strained to capture it.
Sequels now wait 6 to 18 months after a season airs before a studio greenlights the next one.
Sakamoto Days, one of the year's biggest hits, needed 23 separate studios just to finish a single season, according to Licensing International. Publishers are sitting on decades of proven manga with built-in audiences, and most of it is parked behind a pipeline that's already over capacity. The bottleneck lives in production, in turning that material into video fast enough to matter.
Where manga adaptation meets vertical video
Manga is production-ready because the most expensive, most time-consuming parts of making anything animated - character design and world-building - arrive already finished.
Start an animated series from a blank page and months disappear before a single frame gets animated. Character sheets, a world bible, tone, palette, the hundred small decisions that decide what a show looks like before it decides what a show says. A manga has already made those decisions, tested them against a real readership, and refined them across dozens or hundreds of chapters.
Adapting a manga means inheriting years of creative work that's already been paid for and already proven to hold an audience.
Compare that to starting from an original concept, where a studio builds an audience from zero while it builds the show. Webcomics and scroll comics carry some of the same advantage, since they're already vertical native, but manga adaptation adds something most other formats don't have yet: decades of catalog depth and a reader base that already knows how to follow a serialized visual story across installments. That familiarity transfers directly. A manga reader gets the format they already love in motion.
Manga already thinks in sequence
There's a second advantage that's easy to miss. Manga already thinks in sequence. A page is a series of contained compositions, panel to panel, each one framed like a shot: a close-up on a reaction, a wide shot establishing the scene, a beat held a half-second longer for tension. That's the same visual grammar a vertical video episode runs on. Vertical animation is also a sequence of tightly framed, single-focus compositions, moving forward 1 beat at a time on a screen built for a thumb, not a living room.
StoryCo has adapted manga, webcomics, manhwa, and scroll comics into animated vertical series for 400+ titles, including 200+ hours of produced video running inside the WEBTOON app.
That's the return available when the creative groundwork is already done and production is the only thing standing between a manga and the audience that hasn't found it yet.
Speed without shortcuts
None of this comes from replacing artists with technology. The production layer moves faster because of workflow and technology: timing, formatting, the mechanical work. The performances stay human. When a manga becomes an animated vertical series, real voice actors record it, the same way StoryCo's 800+ voice actors do for its full-cast audio work with some of Japan’s most reputable animation brands. Speed is a production advantage here, not a shortcut around the craft.
10,000 titles a year. A pipeline already over capacity. Vertical video is where the backlog moves.
The anime industry's capacity problem has no near-term fix. Studios are stretched, closures are climbing, and the manga stacking up behind that bottleneck keeps growing by 10,000 titles a year. Maybe traditional production catches up eventually. Until it does, there's a version of nearly every one of those stories that can exist now, on a phone, in weeks instead of years.