back number’s ‘Blue Amber’ Bows at No. 1 on Japan Hot 100

back number’s “Blue Amber” debuts at No. 1 on this week’s Billboard Japan Hot 100, released May 7, becoming the popular band’s sixth leader on the chart.

The track is being featured as the theme song for the ongoing drama series starring Keiko Kitagawa called Anata wo ubatta sonohi kara. After being released digitally on April 28, the track came in at No. 2 for downloads (14,750 units), No. 7 for streaming (6,154,747 weekly streams), No. 8 for video views, and topped radio airplay. The song gives the three-man J-pop band its sixth No. 1 (nine weeks in all) on the Japan Hot 100.

Four other songs by back number are currently charting, with “Takaneno Hanakosan” rising 38-35, “Suiheisen” 46-44, “Hanataba” 65-56, and “Happy End” 78-75 this week.

List of back number’s No. 1 Hits:

“Omoidasenakunaru sonohimade” (“Until the day I can’t remember”) 
“Christmas Song” [Three weeks]“Boku no Namae wo” (“(You called) my name”) 
“Old Fashion”
“to new lovers” (Japanese title: “Atarashii Koibitotachi ni”) [Two weeks]“Blue Amber”

Mrs. GREEN APPLE’s “KUSUSHIKI” follows at No. 2. Compared to the week before, streaming and video for the The Apothecary Diaries Season 2 Part 2 opener decreased to 93%, while downloads and karaoke increased to 108% and 136%, respectively. At No. 3 is the three-man band’s “Lilac,” moving 5-3. Streaming and video for the Oblivion Battery opener gained slightly, while downloads and karaoke showed significant growth of 121% and 135%, respectively.

≠ME’s “Mobunoderella” bows at No. 4. The title track of the group’s 10th double A-side single released April 30 topped sales with 232,441 copies sold in its first week.

King Gnu’s “TWILIGHT!!!” falls a notch to No. 5. The theme song for the animated blockbuster Detective Conan: One-Eyed Flashback scores its third week on the tally, coming in at No. 5 for downloads (6,333 units), No. 4 for streaming (7,639,298 streams), No. 6 for radio and No. 4 for video.

Cho Tokimeki Sendenbu’s “Sekai de ichiban idol” debuts at No. 7. The title track of the group’s double A-side single was released April 30 and came in at No. 2 for sales (85,438 copies) and No. 45 for radio. 

Also debuting at No. 9 is Travis Japan’s “Would You Like One?” The theme song for the animated movie Tabekko Doubutsu The Movie launched at No. 1 for downloads, No. 67 for streaming, and No. 55 for radio. 

Outside the top 10, Mrs. GREEN APPLE’s new song “Tengoku” debuts at No. 11. It’s the theme song for the movie Shinso wo ohanashi shimasu starring the band’s frontman Motoki Omori (alongside timelesz member Fuma Kikuchi) in a feature film for the first time. The track comes in at No. 3 for downloads and No. 12 for streaming.

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 April 28 to May 4, here. For more on Japanese music and charts, visit Billboard Japan’s English X account.