Kenshi Yonezu’s “IRIS OUT” logs its 12th week at No. 1 on the Billboard Japan Hot 100, on the chart released Dec. 31, 2025.

The track holds the top spot for a second consecutive week to mark its 12th total week atop the tally. Gaining across all metrics, streaming and video views for the Chainsaw Man – The Movie: Reze Arc theme both rise to 105% week-over-week, while CD sales are up to 115%, downloads to 120%, radio airplay to 148% and karaoke to 153%. Yonezu drew further attention on Dec. 23 with the announcement of his first-ever performance of “IRIS OUT” on NHK’s Kohaku Uta Gassen to be aired on New Year’s Eve. His segment from the show has since been posted to the NHK MUSIC YouTube channel, surpassing 10.99 million views as of Jan. 7, 2026.

King & Prince’s “Theater” follows at No. 2. The lead track from the group’s new album STARRING, released Dec. 24, was written and composed by Ayumu Imazu. The song jumps 47-2 this week, coming in at No. 1 for radio, No. 2 for downloads, No. 3 for streaming and No. 4 for video. Another track off the album, “Kibo no Oka,” comes in at No. 35 on the Japan Hot 100.

M!LK’s “Sukisugite Metsu!” climbs 8-3 to earn the group its first-ever top 3. Streaming surges to 139% of the prior frame, downloads to 154%, video to 122% and karaoke spikes to 238%. The five-member boy band performed the song on CDTV Live! Live! on Dec. 22. Another track gaining momentum is “Iijan,” which rises 77-62 following buzz on social media.

At No. 4 is Snow Man’s “CHARISMAX,” returning to the top 5 for the first time in about three months, while Kenshi Yonezu and Hikaru Utada’s “JANE DOE” jumps two spots to No. 5.

The top song for sales this week, fav me’s “Sukinankaja… Nyai!,” lands at No. 16, while the leader for downloads, Masaharu Fukuyama’s “Mokusei feat. Koshi Inaba,” charts at No. 20.

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 Dec. 22 to 28, here. For more on Japanese music and charts, visit Billboard Japan’s English X account.