Table of Contents
On the evening of July 8, a small but telling number ticked upward on Crunchyroll’s release schedule: episode one of “Tokutsuo,” the Japanese-dubbed adaptation of the Korean webtoon “Tomb Raider King.” A Korean-made animated series was airing simulcast on Fuji TV and Kansai TV — two of Japan’s most established broadcasters — with a Korean girl group singing the opening theme in Japanese. Three years ago, that sentence would have needed footnotes. Now it barely raises an eyebrow, and that shift is the real story.
The Invasion Begins: ‘Tomb Raider King’ Lands on Japanese TV
The adaptation comes from Studio EEK, a Korean animation house, with director Seung Wook Woo handling both direction and series composition. That a Korean studio built the anime from the ground up, rather than licensing the property to a Japanese production committee, is itself notable. Historically, webtoon-to-anime deals leaned on Japanese studios to handle the animation while Korea supplied only the source material. Here, the source, the story, and the finished frames all trace back to Korea.
The Japanese voice cast reads like a veteran roster: Yoshimasa Hosoya voices lead character Ryoga Goriki, Saori Hayami plays Irene Holton, and Junichi Suwabe takes on Taisei Ogawara. Hyun-Jung Lee leads character design and animation direction, Hyung Jun Heo serves as assistant director, and Ju Young Kim composed the score. Kadokawa announced the project; Tapas distributes the English-language webtoon digitally.
Then there’s the opening theme. QWER, the Korean girl group known for blending band instrumentation with idol choreography, recorded “Show Down” entirely in Japanese lyrics — their first anime tie-up, industry shorthand for a musical act’s theme-song partnership with an anime production. Season one runs twelve episodes. Why does a girl group singing in Japanese matter to a tomb-raiding anime? Because it signals Korean music, animation, and webtoon IP are now packaged as a single export unit, not sold separately to whichever Japanese partner will take them.
Why Korean Animation Chose Japan: Market Economics and Format Wars
Japan is not a neutral market to crack. It is the birthplace of manga and the anime industry’s home turf, so a Korean studio landing a primetime dub slot on Fuji TV is a bigger deal than it sounds. The economics explain the ambition. Naver Webtoon Entertainment posted $1.35 billion in revenue in 2024, and Japan alone accounted for roughly 48 percent of that. Kakao Entertainment’s Piccoma app is the top-grossing non-game app in Japan — ahead of every mobile game and social app.
Charlie Park, head of global webtoon business at Kakao Entertainment, put it bluntly: “Smartphones made this into a business with a potential for profit. And once we established this in Korea, we turned to Japan, which thanks to its existing audience for manga, seemed fertile ground.” He also puts it this way: “We describe ourselves as a ‘story company,’ rather than a comics firm. Whether you look at webtoons, novels or music, story is what transcends them all.”
Format matters too. Korean webtoons are built for vertical scrolling, full color, no page turns. Japanese manga is still largely serialized in black-and-white print panels. That difference used to be a barrier to crossover. Now it looks like an opening — younger Japanese readers are shifting to phone-first reading habits, and Korean platforms built for that behavior got there first.
The IP Pipeline: From Webtoon to Studio to Global Screen
“Tomb Raider King” did not start as an anime. It began as a web novel by SAN.G, was adapted into a webtoon with story work by Yuns at REDICE STUDIO, illustrated by 3B2S, and character-designed by P-crush — a four-stage chain before a single frame of animation existed. This is the “One Source Multi Use” model in action: one story property extends across novel, webtoon, anime, and eventually merchandise, each format pulling in a slightly different audience.
It is not an isolated case in 2026. “Dark Moon: The Blood Altar,” “Terror Man,” “Your Letter,” “Eleceed,” and “A Returner’s Magic Should Be Special” season two are all part of the same wave of webtoon-originated anime spanning horror, romance, and action fantasy. LINE Webtoon has committed to producing more than twenty new webtoon-based anime series in a single year. At Annecy, the animation industry’s largest global marketplace, more than a dozen Korean studios signed deals in 2026 alone.
The scale of the industry explains why studios keep betting on this pipeline. Korea’s domestic webtoon market surpassed 2.189 trillion won in 2026, up 19.7 percent year over year. Globally, the webtoon market is projected to reach $10 to $14 billion, growing at a 33.1 percent compound annual rate. Naver Webtoon and Kakao Entertainment together control 67.5 percent of global webtoon revenue, reaching 170 million monthly active users across 150 countries.
The Backlash Question: Can the Boom Last?
Every boom invites skeptics. If roughly half of new anime in a season traces back to webtoon material, critics ask, does originality suffer? A story that reads beautifully as a scrolling webtoon — timed reveals, panel-by-panel pacing built for a thumb swipe — does not always translate cleanly into twelve episodes of broadcast animation. Something can get lost between formats, and fans of the source material sometimes notice first.
There is also a quieter concern about production capacity. As Korean studios take on more co-productions at once, quality control becomes harder to guarantee across every title. Not every adaptation will get the casting depth “Tomb Raider King” received. And Japan’s own industry is not standing still — its studios are experimenting with digital-first, vertical-scroll formats of their own, the same format Korea built its advantage on.
So is this a genuine platform shift or a cyclical trend that cools once the novelty wears off? Nobody in the industry knows yet. What is clear is that the current wave is being driven by real revenue, not just enthusiasm — and revenue tends to outlast trends built on hype alone.
What This Means for the K-Content Ecosystem
Step back from any single title and the pattern is clearer. Webtoons used to be Korea’s proving ground for K-drama scripts — testing which stories had audience pull before committing to live-action budgets. A second pipeline has now opened alongside it, one that runs from webtoon directly into anime, with Korean studios doing the animation work themselves rather than licensing it out.
“Tomb Raider King” is a useful marker precisely because it stacks so many pieces of that pipeline in one place: Korean source material, Korean studio production, Japanese broadcast distribution, a Korean idol group’s Japanese-language theme song, and global streaming through Crunchyroll simultaneously. Whether that combination becomes the industry standard or stays a high-profile exception depends on what happens with the next batch of titles LINE Webtoon and its rivals push into production this year.
What should readers watch next? The ratings and streaming numbers for “Tomb Raider King” through its twelve-episode run will show whether Japanese audiences accept a Korean-made anime as readily as a domestic one. Also worth tracking: whether more idol acts follow QWER into anime tie-up deals, or whether “Show Down” turns out to be a one-off experiment rather than the start of a pattern.
Source: Mina Cho, koreaupclose.com, July 21, 2026.
