Kenshi Yonezu’s “IRIS OUT” debuts at No. 1on the Billboard Japan Hot 100, on the chart released Sept. 24.
The latest song by the “KICK BACK” hitmaker serves as the theme for Chainsaw Man – The Movie: Reze Arc, released in domestic theaters Friday (Sept. 19). “IRIS OUT” rules streaming with 23,953,292 streams — the highest ever for a solo artist and the fourth largest in Japan chart history. The track also tops downloads and video views, while hitting No. 4 for radio airplay. Total points for the song this week was 21,892, the highest single-week score of the year so far.
Japan Hot 100 All-time Weekly Streaming Top 5
1. BTS “Butter” 29,935,364 streams
2. YOASOBI “Idol” 25,860,696 streams
3. Creepy Nuts “Bling-Bang-Bang-Born” 24,945,758 streams
4. Kenshi Yonezu “IRIS OUT” 23,953,292 streams
5. Official HIGE DANDism “Subtitle” 21,708,199 streams
2025 Weekly Total Points Top 3
1. Kenshi Yonezu “IRIS OUT” 21,892 pts
2. HANA “Blue Jeans” 19,152 pts
3. BE:FIRST “GRIT” 16,398 pts
At No. 2 is BE:FIRST’s “Sora.” Released digitally on July 7 as their 8th single, the CD version dropped Sept. 17, selling 82,253 copies in its first week and coming in at No. 2 for sales. The track soars 58-2, with downloads gaining by 1,434% compared to the previous week, streaming by 235%, radio airplay by 941%, and video views by 411%.
Hinatazaka46’s “Onegai Bach!” jumps 82-3 this week. The track off the group’s 15th single sold 527,439 copies — surpassing its previous release — to dominate sales, while coming in at No. 13 for downloads and No. 35 for streaming.
Number_i’s “Numbers Ur Zone” bows at No. 4. Released Sept. 22 as the lead single off the trio’s second full album called No.II, the song hits No. 1 for radio, No. 2 for downloads and video, and No. 26 for streaming. Four other tracks by the group are charting this week: “U.M.A.” climbs 54-32 and “GOD_i” is at No. 48 (both also included in No.II), “BON” is at No. 77, and “INZM” is at No. 91.
HANA’s “Blue Jeans” slips two notches to No. 5, but continues to hold in the top 5 for the tenth consecutive week. Meanwhile, “Kenso” by Nijidatoka, a Nijisanji virtual band, debuts at No. 9. The track off the group’s first single “Kyoso RIOT” launched with 43,273 copies to reach No. 3 for the metric and also comes in at No. 30 for downloads.
The Billboard Japan Hot 100 combines physical and digital sales, audio streams, radio airplay, video views and karaoke data.
See the full Billboard Japan Hot 100 chart, tallying the week from Sept. 15 to 21, here. For more on Japanese music and charts, visit Billboard Japan’s English X account.