Kenshi Yonezu’s hit track “IRIS OUT” has reached a remarkable milestone, securing the No. 1 position on the Billboard Japan Hot 100 for the fifth consecutive week, according to the chart released on October 22. This impressive streak cements the song, featured as the theme for Chainsaw Man: The Movie – Reze Arc—as a dominant force across multiple metrics, including streaming, video views, and karaoke. Although its points in most categories dipped slightly, radio airplay surged by an astonishing 159% from the previous week, helping it retain its top spot.

Yonezu now stands on the brink of setting a new personal record for consecutive weeks at No. 1. His previous longest streak was five weeks with “Lemon” in January 2019, which ultimately spent seven weeks overall at the chart’s summit.

The chart also saw a wave of new and notable entries. Debuting strongly at No. 2 is FRUITS ZIPPER’s “Hacha Mecha Wacha Life!” the lead track from the girl group’s fourth single “Hacha Mecha Wacha Life! / JAM.” The song posted impressive first-week sales of 381,464 copies, marking the group’s highest debut to date and earning them the No. 1 position in physical sales. “Hacha Mecha Wacha Life!” also performed well across other categories, ranking No. 43 in downloads, No. 38 in streaming, and No. 16 in video. This marks FRUITS ZIPPER’s second top-10 appearance on the Japan Hot 100, following their previous chart-topper “Kawaiitte Magic.”

Yonezu’s chart dominance continued with two additional tracks landing in the top five. His song “1991,” the theme for the live-action film 5 Centimeters per Second, debuted at No. 3, topping the downloads chart with 20,002 units sold in its first week. It also performed strongly across other metrics, ranking No. 3 in streaming, No. 6 in video, and No. 9 in radio airplay. Following closely at No. 4 is “JANE DOE,” Yonezu’s collaborative hit with Hikaru Utada. With three songs in the top five and a clean sweep of the top three positions on the streaming chart, Yonezu’s influence over Japan’s pop landscape remains unmistakable.

Rounding out the top five is GNJB’s “Paranoid Rendezvous.” The debut single from the seven-member boy band, and their first release under Universal Music, launched with 234,269 copies sold, marking their best-ever sales week. The song ranked No. 2 in physical sales, No. 28 in streaming, and No. 54 in radio airplay.

Other notable movements include RADWIMPS’“World End Girlfriend,” from their first album in four years, Anew, which climbed from No. 85 to No. 53 in its second week, boosted by a 171% increase in streaming and 111% in radio airplay. Fujii Kaze’s“I Need U Back” also gained traction, rising from No. 80 to No. 67 after the release of its official music video on October 9.

The Billboard Japan Hot 100 methodology combines data from physical and digital sales, audio streaming, radio airplay, video views, and karaoke performance to produce a comprehensive ranking of the most popular songs in Japan. The current chart reflects activity for the week spanning October 12 to 18.