Japan’s animated sensation Chiikawa the Movie: The Secret of the Mermaid Island has reclaimed the top position at the country’s weekend box office, demonstrating its remarkable staying power nearly three months after its theatrical debut.
During the 12th weekend of its release, from October 9 to 11, 2026, the film attracted approximately 375,000 moviegoers and earned ¥563 million. The comeback came after the movie dropped to fourth place the previous weekend. It has now reached the number-one position multiple times since its July 24 release.
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Box Office Earnings Cross ¥17.95 Billion
The film’s success extends well beyond its latest weekend performance. By October 12, its cumulative box office revenue had surpassed ¥17.95 billion, with approximately 12.29 million admissions.
The achievement placed the movie 12th on Japan’s all-time box office chart, ahead of Harry Potter and the Chamber of Secrets, which earned around ¥17.3 billion in Japan. It was also reported as the highest-grossing film released domestically in Japan during 2026 at that point.
The figures underline the growing commercial strength of the Chiikawa franchise, whose cute characters have become popular through merchandise, online manga and other forms of entertainment.
Special Theatre Gifts Help Boost Attendance
One factor contributing to the film’s renewed box office momentum has been the distribution of special gifts to cinema audiences.
From October 10, Japanese theatres began offering the sixth wave of bonuses: small collectible charm figures featuring characters from the film. Such limited-time promotional items can encourage fans to visit cinemas again and add to their collections.
The film’s revenue has reportedly increased whenever new bonus items have been distributed, demonstrating how character merchandise and theatrical releases can reinforce each other in Japan’s anime market.
What Is Chiikawa: The Secret of the Mermaid Island About?
The movie is the first theatrical feature based on the popular Chiikawa franchise created by Nagano.
The story follows Chiikawa and friends after they receive an invitation to a mysterious island promising rewards and free food. Their journey develops into an adventure involving a suspicious mission and secrets hidden on the island.
Despite the characters’ adorable appearance, the story explores darker themes beneath its colourful visuals. The contrast between cute character designs and unexpected developments has helped distinguish the film from conventional family animation.
New Releases Add Competition at the Box Office
The October 9–11 weekend also welcomed several new films to Japanese cinemas. The new Resident Evil film debuted in second place, while Mama ga Kono Sekai ni Mou Inakutemo ranked third.
GIRLS und PANZER das Finale Chapter 5 opened in fifth place, adding another anime title to the weekend rankings. Despite competition from fresh releases, Chiikawa’s return to first place highlighted its ability to continue attracting audiences well into its theatrical run.
Why Chiikawa’s Success Matters
1. A Major Achievement for Japanese Animation
The film’s box office performance places it among Japan’s most successful theatrical releases.
2. Strong Franchise Loyalty
Millions of admissions and repeat visits suggest that the characters have built a dedicated fan base.
3. Merchandise and Cinema Work Together
Limited-edition theatre gifts provide another way for fans to engage with the franchise while supporting ticket sales.
4. Anime Continues to Drive Cinema Attendance
The film’s comeback demonstrates that Japanese animation can remain competitive even when new releases enter the market.
Final Word
Chiikawa the Movie: The Secret of the Mermaid Island has reclaimed Japan’s weekend box office crown in its 12th weekend, earning ¥563 million over three days and pushing its cumulative revenue beyond ¥17.95 billion.
Its continued success reflects the appeal of the Chiikawa characters, the strength of Japan’s anime market and the role of fan-focused cinema promotions. As the film continues its theatrical run, it remains one of the defining box office stories in Japan’s 2026 entertainment industry.
