A promotional video showcasing the theme song for the anime film You, Fireworks, and Our Promise has been released. The video highlights the track "Kienai Hanabi" (Eternal Fireworks) performed by the idol group timelesz and features scenes with the main characters, Makoto and Aki, interspersed with footage of the real Nagaoka Festival Grand Fireworks Show.

The coming-of-age romance centers on Makoto, a socially awkward Tokyo high schooler, and Aki, a popular and talented class president. Their connection is forged through a mysterious drawing of fireworks, leading them to face a fated choice within a limited timeframe. Shōri Satō of timelesz voices Makoto, while Nanoka Hara, known for her roles in Suzume and the live-action Oshi no Ko, plays Aki. Rie Takahashi voices a mysterious girl named Haru, and Natsuko Yokosawa portrays Makoto's mother.

Directed by Kei Suzuki, who previously worked as an assistant director on City Hunter The Movie: Angel Dust, the film is produced at Synergy SP and The Answer Studio. Kōhei Mori penned the screenplay, with character designs by Yūji Watanabe. The project was planned and produced by Michihiko Umezawa with Shinei Animation. The film's theme song, "Kienai Hanabi," is performed by timelesz.

You, Fireworks, and Our Promise is scheduled to premiere in Japanese cinemas on July 17. The film previously screened at the 79th Cannes International Film Festival as part of the 'Tokyo International Film Festival's Goes to Cannes' event. A manga adaptation is also in the works for the novel, which was published by Shogakukan's Gagaga Bunko in December 2025. Source: Anime News Network