The anime film adaptation of Kaori Mado's You, Fireworks, and Our Promise (Kimi to Hanabi to Yakusoku to) has added three new cast members. Nanami Saiki, Hanaka Kikyō, and Yuka Himemiya, all members of the idol group AVAM, will voice classmates of the protagonist. Stills featuring these characters have been released.
The story centers on Makoto, a socially awkward Tokyo high school boy, and Aki, a popular and talented girl. Their lives intertwine through a mysterious drawing of a fireworks display, leading them to a fateful choice against the backdrop of the Nagaoka Festival Grand Fireworks Show. Shōri Satō voices Makoto, while Nanoka Hara plays Aki. Rie Takahashi voices a mysterious girl named Haru, and Natsuko Yokosawa portrays Makoto's mother, Yukari.
Kei Suzuki is directing the film at Synergy SP and The Answer Studio. Kōhei Mori penned the screenplay, with character designs by Yūji Watanabe. The project is planned and produced by Michihiko Umezawa with Shinei Animation. The idol group timelesz performs the theme song "Kienai Hanabi" (Eternal Fireworks).
The film is scheduled to open in Japanese theaters on July 17. It previously received a preview 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 in December 2025. Source: Anime News Network(https://www.animenewsnetwork.com/news/2026-06-02/you-fireworks-and-our-promise-anime-film-casts-3-avam-idols/.238050)
