The Anthem of the Heart

Lore & Background

The film follows Jun Naruse, a high school girl who, after exposing her father's infidelity as a child, imagines a fairy egg that curses her, sealing her words and causing stomachaches when she tries to speak. Years later, her homeroom teacher signs her up for a Community Outreach Event with three classmates: Takumi Sakagami, Natsuki Nitō, and Daiki Tasaki. Jun discovers she can sing without pain, and the group decides to perform a musical based on her experiences.

Reader's Guide

The Anthem of the Heart received several accolades, including Best Animated Feature at the 36th Anima Festival and Best Rookie Voice Actor (Inori Minase) at the 25th Japanese Movie Critics Awards. It was nominated for Animation of the Year at the 39th Japan Academy Film Prize and Tokyo Anime Award Festival 2016. The film earned over ¥1 billion in Japan and grossed US$8.85 million worldwide. On Rotten Tomatoes, 63% of critics gave it a positive review, with an average rating of 7.8/10. Critics praised its well-written characters and grounded storytelling, though some noted the last act relied on typical dramatic tropes.

Did You Know?

• The film's main theme song is 'Ima, Hanashitai Dareka ga Iru' performed by Nogizaka46.
• The fairy egg character is voiced by Koki Uchiyama, while Takumi Sakagami is voiced by Yoshimasa Hosoya.
• The film was released in North America by Aniplex of America on November 11, 2015.
• The fairy egg is revealed at the end to be a fragment of Jun's own heart.

Production & the Super Peace Busters Legacy

The Anthem of the Heart, known colloquially as Kokosake and carrying the subtitle Beautiful Word Beautiful World, is a 2015 Japanese animated youth drama that opened in Japanese theaters on September 19 of that year. The film was produced by A-1 Pictures and brought to life by a creative trio who collectively go by the name Super Peace Busters. Tatsuyuki Nagai helmed the project as director, Mari Okada crafted the screenplay, and Masayoshi Tanaka took on the dual roles of chief animation director and character designer. This particular combination of talents is no accident: the three had previously collaborated on two beloved properties, Toradora! and Anohana: The Flower We Saw That Day, both of which established their reputation for emotionally resonant storytelling aimed at younger audiences. Their shared history meant that The Anthem of the Heart carried the weight of those earlier successes, positioning it as a natural next step for a team already recognized for weaving heartfelt narratives around adolescents navigating personal pain. The film's Japanese title, Kokoro ga Sakebitagatterunda, translates roughly to "My Heart Wants to Shout," a phrase that proved deeply fitting for the story it tells.

The Fairy Egg and the Weight of Silence

At its core, The Anthem of the Heart is a story about a girl who lost her voice to a wound she cannot name. As a young child, Jun Naruse was vivacious and full of words, enchanted by fairy tales and the castle perched on a hilltop that was, in truth, a love hotel. One fateful day she witnessed her father leaving that building and, without grasping the gravity of what she had seen, blurted out the truth to her mother. The family rupture that followed left her father blaming her, and in her grief Jun conjured an image of a fairy egg that placed a curse upon her: her words would be sealed forever, and any attempt to speak would bring agonizing stomachaches. Years later, as a high school student, she is thrust into a Community Outreach Event by her homeroom teacher. There she encounters Takumi Sakagami singing, and for the first time in years she feels compelled to communicate. By asking him to transform her written words into a song, Jun discovers that the curse does not reach her singing voice. The class builds a musical around her experience, framed as a fairy tale, and through that creative act she begins to confront the truth: the fairy egg was never real. It was a figment she invented so she could blame something external for her silence rather than face the fear that had truly silenced her.

Four Voices, One Stage

The emotional architecture of The Anthem of the Heart rests on a quartet of high school students whose relationships form a delicate web of unspoken feelings and misunderstandings. Jun Naruse, voiced by Inori Minase, is the withdrawn protagonist whose childhood trauma has rendered her mute. Takumi Sakagami, brought to life by Koki Uchiyama, shares her quietness; his parents are divorced and he lives with his grandparents, and his piano skills become the bridge that helps Jun find her voice. Daiki Tasaki, voiced by Yoshimasa Hosoya, arrives as a grumpy former baseball ace with a broken elbow who initially resists the musical project entirely, yet gradually warms to his classmates and develops feelings for Jun. Natsuki Nitō, voiced by Sora Amamiya, is Takumi's ex-girlfriend who still harbors affection for him and misreads his concern for Jun as romantic interest. The film's romantic tangles are resolved with surprising honesty: Takumi and Natsuki reconcile after he admits he has always regretted never telling her how he felt during middle school, while Daiki musters the courage to confess his own feelings to Jun. Each character's arc is tied to the central theme of finding the courage to speak what one truly feels.

Critical Recognition and Industry Honors

Though it was a single theatrical release rather than a serialized television property, The Anthem of the Heart earned a remarkable spread of critical recognition across Japan's animation and film communities. At the 36th Anima Festival, the film was awarded Best Animated Feature, a distinction that underscored its standing among the year's most accomplished animated works. Inori Minase, whose performance as the mute Jun Naruse required conveying an enormous range of emotion without dialogue, was honored with the Best Rookie Voice Actor prize at the 25th Japanese Movie Critics Awards, a testament to how central her vocal work was to the film's emotional impact. The film also received a nomination for Animation of the Year at the prestigious 39th Japan Academy Film Prize, placing it alongside live-action features in one of the country's most respected film competitions. Additionally, it was nominated at the Tokyo Anime Award Festival in 2016, further cementing its place in the broader anime landscape. These accolades collectively signal that the industry and critics alike recognized the film not merely as a youth-oriented story but as a work of genuine artistic and narrative ambition.