Kimi to Hanabi to Yakusoku to (君と花火と約束と) is a Japanese light novel written by Kaori Mado and illustrated by Akamoku. The novel was originally serialized online on the Note website from August 4 to October 27, 2025.[1][2] It was later acquired by Shogakukan, who released it in print under its Gagaga Bunko imprint on December 18 of the same year. A manga adaptation illustrated by Yomiya Ririura began serialization on Shogakukan's Sunday Webry service in March 2026. An anime film adaptation produced by Shin-Ei Animation and animated by SynergySP and The Answer Studio is scheduled to premiere in Japan in July 2026.
Plot
Makoto Natsume, a first-year junior high school student in Chōfu, Tokyo, is suddenly confessed to by a fellow freshman named Aki Hayama. Aki told him that her grandmother once told her about meeting a boy named Makoto Natsume in the future. Having never met before, Makoto is convinced that Aki is mistaken. When Aki brings up a painting of a fireworks, Makoto decides to help her find the Makoto Natsume she is looking for.