{"id":52719,"date":"2026-05-22T06:01:55","date_gmt":"2026-05-22T10:01:55","guid":{"rendered":"https:\/\/overcentral.com\/en\/kimi-to-hanabi-anime-film-trailer-reveals-timelesz-theme-song\/"},"modified":"2026-05-22T06:03:09","modified_gmt":"2026-05-22T10:03:09","slug":"kimi-to-hanabi-anime-film-trailer-theme-song","status":"publish","type":"post","link":"https:\/\/overcentral.com\/en\/kimi-to-hanabi-anime-film-trailer-theme-song\/","title":{"rendered":"Kimi to Hanabi Anime Film Trailer Reveals timelesz Theme Song"},"content":{"rendered":"

The official production committee for the upcoming anime film Kimi to Hanabi to Yakusoku to (You, Fireworks, and the Promise) has released a full-length trailer, offering the deepest look yet at its story, characters, and emotional core. Alongside the new footage, the Japanese pop group timelesz<\/a> has been confirmed to perform the theme song, titled “Kienai Hanabi” (Unfading Fireworks). The trailer, which premiered on the film’s official Twitter account, provides a rich preview of what audiences can expect when the movie hits theaters across Japan on July 17<\/a>, 2026.<\/p>\n

Trailer Reveals Story Beats and Character Dynamics<\/h2>\n

The newly unveiled trailer runs through a series of poignant scenes, establishing the central relationship between the two protagonists, Makoto and Aki. From the footage, it is clear that the film will explore the stark contrast in their lives and personalities. Makoto appears grounded and contemplative, while Aki seems more spontaneous and driven by emotion. Their connection, sparked by a mysterious poster for the legendary Nagaoka Grand Fireworks Festival, becomes the narrative anchor of the entire story. The trailer carefully intercuts moments of quiet introspection with sweeping shots of festival preparations, suggesting a narrative that balances intimate character drama with the grandeur of one of Japan’s most famous summer events. Viewers are given a sense of the emotional stakes involved, as both characters appear to be wrestling with personal destinies that may be altered by the decisions they make under the fireworks-lit sky.<\/p>\n

Theme Song “Kienai Hanabi” by timelesz Takes Center Stage<\/h2>\n

A significant portion of the trailer is dedicated to showcasing the theme song “Kienai Hanabi,” performed by the popular group timelesz. The track’s title, which translates to “Unfading Fireworks,” aligns perfectly with the film’s thematic focus on memory, promises, and the fleeting yet indelible nature of shared moments. The music underscores several key emotional sequences in the trailer, suggesting that the song will play a pivotal role in the film’s most resonant scenes. The integration of the music into the trailer indicates a close creative collaboration between the filmmakers and the group, with the song’s melody and lyrics seemingly tailored to reflect the story’s emotional arc. Fans of timelesz, particularly those who follow member Shori Sato who also voices a character in the film, will find the song to be a central emotional pillar of the cinematic experience.<\/p>\n

Creative Team Behind the Film<\/h2>\n

The production brings together a notable team of industry veterans. Kei Suzuki, known for his directorial work on Tower of God: Return of the Prince, is at the helm. His experience with large-scale fantasy and character-driven narratives makes him a fitting choice for a story that blends personal drama with a visually spectacular setting. The screenplay is written by Kouhei Mori, marking his first major scripting credit, which adds an element of fresh perspective to the project. Character design and animation direction are handled by Yuuji Watanabe, whose credits include work as an animation director on Anne Shirley and the City Hunter film, bringing a polished and expressive visual style to the production. The animation is produced by Synergy SP, the studio behind titles such as Kakkou no Iinazuke and Kanojo mo Kanojo II, with additional production support from The Answer Studio, which has collaborated on Anne Shirley and Tower of God: Return of the Prince. This combination of studios suggests a production pipeline equipped to handle both detailed character animation and the large-scale spectacle required for the fireworks festival sequences.<\/p>\n

Voice Cast Adds Star Power<\/h2>\n

The voice cast brings considerable talent to the project. Shori Sato, a member of timelesz, takes on a lead role, bridging the film’s musical and acting components. He is joined by Nanoka Hara and Rie Takahashi, both of whom bring strong track records in anime voice acting. The casting choices indicate a focus on emotional authenticity, with each actor suited to the nuanced demands of the material. The dynamic between the characters, as hinted at in the trailer, suggests that the vocal performances will be central to conveying the story’s themes of connection, destiny, and personal transformation.<\/p>\n

Plot Synopsis: A Promise Under the Fireworks<\/h2>\n

The story centers on Makoto and Aki, two young individuals whose lives could not be more different. Despite their contrasting circumstances, they find themselves drawn together by a mysterious poster advertising the Nagaoka Grand Fireworks Festival, one of the most iconic summer events in Japan. As they navigate their\u5404\u81ea\u7684 personal struggles and aspirations, the festival becomes both a literal and metaphorical backdrop for their evolving relationship. The film poses a central question: can two people from completely different worlds find common ground, and what price are they willing to pay to change the course of their lives? Set against the breathtaking visuals of the fireworks display, the narrative promises to explore the intersection of fate, choice, and the promises that bind people together. The trailer suggests that the story will build toward a climactic moment during the festival itself, where the characters must make decisions that will have lasting consequences.<\/p>\n

Release Date and Theatrical Plans<\/h2>\n

Kimi to Hanabi to Yakusoku to is scheduled for release on July 17, 2026, in theaters across Japan. The timing places the film squarely in the middle of the summer movie season, a period traditionally associated with major animated releases and family-friendly fare. The July release date<\/a> also aligns thematically with the fireworks festival season in Japan, allowing the film to capitalize on the cultural resonance of summer traditions. While international release plans have not yet been announced, the film’s strong production values and the involvement of timelesz suggest potential for distribution beyond Japan, particularly in markets with established audiences for anime films.<\/p>\n

Visual Aesthetic and Animation Quality<\/h2>\n

Alongside the trailer, a new key visual was released, capturing the two main characters against a backdrop of shimmering fireworks. The illustration emphasizes the contrast between the characters and the luminous, transient beauty of the fireworks. The animation in the trailer shows a strong attention to detail, particularly in the rendering of the fireworks themselves, which appear vibrant and richly textured. The character designs by Yuuji Watanabe are expressive and modern, fitting the contemporary setting of the story. The visual direction suggests a film that will use its animated medium to heighten the emotional impact of key scenes, with careful use of color, lighting, and motion to convey the inner states of the characters.<\/p>\n

Anticipation and Industry Context<\/h2>\n

The release of the trailer and the confirmation of the theme song have generated significant buzz within the anime community. The film represents a convergence of several trends: the continued popularity of romance and coming-of-age stories in anime, the use of major musical acts to drive audience engagement, and the appeal of summer festival settings that evoke nostalgia and cultural tradition. The involvement of Synergy SP, a studio experienced in adapting popular manga and light novel<\/a> properties, suggests that the film will benefit from polished production values and efficient storytelling. For fans of the original source material, the trailer offers reassurance that the adaptation is capturing the emotional essence of the story. For newcomers, it presents an accessible entry point into a narrative that balances universal themes with specifically Japanese cultural elements.<\/p>\n

Looking Ahead to Summer 2026<\/h2>\n

With the trailer now available and the release date set for July 17, 2026, the marketing campaign for Kimi to Hanabi to Yakusoku to is clearly building momentum. The film’s combination of a compelling story, a talented creative team, and a high-profile musical act positions it as one of the notable anime releases of the summer season. As more details about the cast, additional staff, and potential international screenings emerge, the film is likely to attract growing attention from both domestic and international audiences. The theme of a promise made under the fireworks, a universal symbol of fleeting beauty and lasting memory, gives the film a timeless quality that could resonate well beyond its initial theatrical run.<\/p>\n","protected":false},"excerpt":{"rendered":"

The official production committee for the upcoming anime film Kimi to Hanabi to Yakusoku to (You, Fireworks, and the Promise) has released a full-length trailer, offering the deepest look yet at its story, characters, and emotional core. Alongside the new footage, the Japanese pop group timelesz has been confirmed to perform the theme song, titled […]<\/p>\n","protected":false},"author":8,"featured_media":85359,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/cards.overcentral.com\/cards\/en\/52719.png","fifu_image_alt":"Kimi to Hanabi Anime Film Trailer Reveals timelesz Theme Song","footnotes":""},"categories":[32908],"tags":[],"class_list":["post-52719","post","type-post","status-publish","format-standard","has-post-thumbnail","category-pop-culture"],"fifu_image_url":"https:\/\/cards.overcentral.com\/cards\/en\/52719.png","fifu_image_alt":"Kimi to Hanabi Anime Film Trailer Reveals timelesz Theme Song","_links":{"self":[{"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/posts\/52719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/comments?post=52719"}],"version-history":[{"count":0,"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/posts\/52719\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/media\/85359"}],"wp:attachment":[{"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/media?parent=52719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/categories?post=52719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/overcentral.com\/en\/wp-json\/wp\/v2\/tags?post=52719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}