<a href="/music/NMB48">NMB48</a>'s "Yokuboumono" blasts in at No. 1 on this week's Billboard Japan Hot 100, dated April 2 to 8. The popular J-pop girl group's new single rules physical sales with 207,448 copies sold and comes in at No. 6 for look-ups and No. 8 for Twitter mentions.

<a href="/music/Kenshi-Yonezu">Kenshi Yonezu</a>'s "Lemon" steps down a notch after holding the top spot for two weeks, but it still dominates downloads for the eighth consecutive week and video views for the sixth. It's also still at No. 1 for look-ups and holding steady in other metrics of the chart's measurement as well, coming in at No. 7 for physical sales, No. 9 for radio airplay, and No. 10 for Twitter. It still has the potential to retake No. 1 on the Japan Hot 100, depending on the physical sales points of upcoming new releases.

Masaki Suda's "Sayonara Elegy," at No. 8 on this week's Japan Hot 100, continues to rule the streaming metric for the fifth inconsecutive week. It slipped to No. 2 for a couple of weeks in between but retook the top spot, where it's been sitting for the third week in a row. Combined with its strength in video views and downloads, it looks like the song will stay in the upper ranks for a while.

<a href="/music/Nogizaka-46">Nogizaka46</a>'s "Synchronicity" debuts at No. 17 on this week's Japan Hot 100, powered only by Twitter (No. 1) and video view points (No. 7). The song broke into the the top 20 before the release of the physical single -- set to drop April 25 -- displaying fans' anticipation for new music from the popular girl group.

The Billboard Japan Hot 100 combines physical and digital sales, radio airplay, Twitter mentions, YouTube and GYAO! video views, Gracenote look-ups and audio streams from Apple Music, AWA, Google Play Music, KKBOK, LINE MUSIC, Rakuten Music, Recochoku provided by Gfk Japan, as well as streaming counts based on lyrics displayed on PetitLyrics.

Billboard Japan Hot 100 Top 20 (dated April 2 to 8)

1. Yokuboumono / NMB48

2. Lemon / Kenshi Yonezu

3. a kind of love / Choutokkyuu

4. Doraemon / Gen Hoshino

5. Glass Wo Ware! / Keyakizaka46

6. Oyasumi Polaris Sayonara Parallel World / Dempagumi.inc

7. My Star / EXILE

8. Sayonara Elegy / Masaki Suda

9. ZERO / Masaharu Fukuyama

10. Change / ONE OK ROCK

11. Shin Takarajima / Sakanaction

12. Ame Agari No Step / Atarashii Chizu

13. Uchiage Hanabi / DAOKO X Kenshi Yonezu

14. Candy Pop / TWICE

15. Mugen Mirai / Perfume

16. Shape of You / Ed Sheeran

17. Synchronicity / Nogizaka46

18. Rakuen / Hiromi Seki (CV: Saya Aizawa)

19. Eine Kleine / Kenshi Yonezu

20. This is Me / Keala Settle & The Greatest Showman Ensemble