The anime film “Kimi to Hanabi to Yakusoku to” (君と花火と約束と) has officially revealed its main theme, “消えない花火 (Kienai Hanabi),” a new song from idol group timelesz, with the film opening nationwide in Japan on July 17, 2026.

The anime film 「君と花火と約束と」 (Kimi to Hanabi to Yakusoku to) has unveiled its full trailer and official main visual, along with new cast members and the theme song “消えない花火” (Kienai Hanabi) performed by timelesz.