On March 26, 2025, the official team behind the ChaO anime movie took to X (previously known as Twitter) to unveil a captivating teaser promotional video alongside a stunning key visual, which confirmed the film’s debut on August 15, 2025. This short video not only showcased the film’s main cast but also set the tone for what promises to be an exciting cinematic experience.
The production of the ChaO anime movie has been a labor of love for seven years at the renowned Studio 4°C. Producer Eiko Tanaka revealed that the film would comprise over 100,000 hand-drawn animations, offering viewers a truly authentic and artistic experience. This original project explores a fascinating world where humans and mermaids coexist, merging fantasy with emotional storytelling.
Teaser Video Highlights and Premiere Details
The first teaser, shared on March 26, revealed that the ChaO anime movie would officially premiere in Japan on Friday, August 15, 2025. Audiences can look forward to more details about the anime’s broadcast and distribution in the coming weeks.
This engaging teaser trailer introduces the film’s lead characters: Stefan, a salaryman at a shipbuilding company, and ChaO, the mermaid princess. The 30-second clip captivates viewers by depicting ChaO’s enchanting emergence in front of Stefan at the shipyard, where she unexpectedly proposes to him. It beautifully illustrates their blossoming connection and the unforgettable moments they share together against a backdrop of vibrant animation crafted by Studio 4°C.
Voice talents Oji Suzuka and Anna Yamada bring new life to the characters, portraying Stefan and ChaO, respectively. Their performances are anticipated to add depth to the narrative and emotional weight to the love story between the two characters.
In addition to the teaser, the official staff released a captivating key visual featuring Stefan and ChaO joyfully walking through the city. The illustration is paired with thoughtful Japanese catchphrases, including “Meeting is a Miracle,”and the English tagline, “This Summer, you can meet a new-age mermaid princess you’ve never seen before.”
Behind the Scenes: Key Creative Talent
The narrative unfolds in a futuristic society where humans and mermaids navigate coexistence. At its heart, the story revolves around Stefan, a mundane salaryman whose life takes a magical turn upon meeting ChaO, the mermaid princess. As she boldly proposes marriage, Stefan’s initial confusion transforms into an enduring romance, providing viewers with a heartfelt experience centered on love and connection.
Directed by Yasuhiro Aoki, with character designs by Hirokazu Kojima as the chief animation director, ChaO is set to deliver high-quality visuals and storytelling. Supporting the film is art director Hiroshi Takiguchi, known for his impressive work on titles such as Ajin and The Garden of Words, while Takatsugi Muramatsu composes the film’s soundtrack. Toei will handle the distribution of this highly anticipated film.