timelesz's single "Kienai Hanabi" has claimed the No. 1 spot on the Billboard Japan Hot 100 chart released on 5 August, marking the group's first ever chart-topper under its current lineup. The track, which serves as the theme song for the animated film Kimi to Hanabi to Yakusoku to featuring member Shori Sato's lead debut, previously peaked at No. 2 with "Steal The Show" before this breakthrough.

"Kienai Hanabi" sold 424,416 copies in its first week to dominate sales, ranking No. 3 for downloads and No. 15 for radio airplay. ILLIT's "I Got Your Back" featuring HANA's JISOO and MOMOKA debuted at No. 2, while ATEEZ's "BAD" jumped from No. 64 to No. 3. Elsewhere on the chart, five tracks tied to the Chiikawa the Movie soundtrack entered simultaneously between No. 50 and No. 86, sweeping the top of the downloads list, among nineteen new entries this week.