What 3ミリの恋 Is About
The film follows Tatsuhiko, a high school student in Karatsu, Saga Prefecture, who spends his days fishing—until Yunseul, an exchange student from Busan, arrives and gradually draws him closer. A careless remark pushes her to return to Korea abruptly, but then Tatsuhiko notices something in a history textbook: the distance between Karatsu and Busan measures just 3 millimeters on the map. That tiny measurement becomes the spark for a life-changing decision that forms the heart of this cross-border romance.
The Director & Cast
This is the commercial feature debut of director Jeon Jinyoon, a third-generation Zainichi Korean filmmaker whose acclaimed short films—including "ミヌとりえ" and "国道7号線"—have earned recognition at major domestic and international festivals. According to Cinema Cafe, the film is a Japanese–Korean co-production distributed by Toei and Toei Video, marking a significant milestone for the director's career. Soya Kurokawa takes the lead role as Tatsuhiko, while Korean actor Kim Ji-ahn plays Yunseul, the exchange student whose arrival upends everything.
What's striking is the thematic ambition here—this isn't just a teen romance. The official site describes it as a "refreshing yet thematically layered" story that weaves in the historical and social background between Japan and Korea from the perspective of a filmmaker whose own family history bridges both nations. That's not a small thing.
Why This Matters
Jeon Jinyoon's shorts have already demonstrated a gift for capturing quiet emotional moments—the kind that linger. His transition to a feature-length narrative, especially one centered on cross-cultural connection, suggests he's ready to expand that sensibility across a larger canvas. And honestly, Japanese cinema's relationship with Korean stories (and vice versa) remains complex and often underexplored in mainstream releases. A debut feature that engages that territory seriously, rather than as backdrop, could be genuinely interesting.
A teaser trailer dropped in May 2026 on eiga.com and the film's official site, though full critical reaction won't exist until after the theatrical release.
Release Date & Where to Watch
3ミリの恋 is scheduled for theatrical release in Japan on November 6, 2026. It hasn't been released yet—we're still months away. Streaming availability hasn't been confirmed; Movie OTT will track platform announcements as distribution rights are finalized. Check the Where-to-Watch widget on this page for updates as they're announced.
Frequently Asked Questions
When is 3ミリの恋 releasing?
The film is set for theatrical release in Japan on November 6, 2026. International release dates haven't been announced yet.
Is 3ミリの恋 out yet?
No—it's still in pre-release. As of now, only a teaser trailer is available online.
Where will I be able to watch 3ミリの恋?
Streaming and home video platforms haven't been announced yet. It'll hit theaters first in Japan. Movie OTT will update this page as soon as OTT availability is confirmed.
Who's directing 3ミリの恋?
Jeon Jinyoon, a third-generation Zainichi Korean filmmaker, is making his commercial feature debut with this film. His short films have won festival recognition.
What's the plot about?
It follows a Japanese high school fisherman and a Korean exchange student whose connection is tested by distance—both emotional and geographical—after a misunderstanding sends her back to Busan.
Looking Ahead
November 2026 will reveal whether Jeon Jinyoon's vision translates as powerfully to feature length as his shorts suggest it might. A debut feature that takes cross-cultural storytelling seriously, with a cast and premise that don't shy away from complexity—that's worth keeping on your radar.