J-pop boy band JO1 (pronounced "jay-oh-one") shoots to No. 1 on the latest Billboard Japan Hot 100 (dated March 2 to 8) with its debut single, "INFINITY." The new 11-member group, formed through the audition program PRODUCE 101 JAPAN, led physical sales with 344,299 copies sold and also topped Twitter mentions, where they have charted for seven weeks.

The metric for look-ups, which counts the number of times a CD is ripped to a computer, usually coincides with physical sales, but this week's No. 1 goes to Mr. Children's new single, "Birthday," which debuts at No. 3 on the Japan Hot 100. The veteran pop band's first new single in almost three years sold 64,698 copies and comes in at No. 3 for physical sales, but its strength in look-ups proves the consistent appeal of the group's songs. The track also comes in at No. 4 for radio airplay.

Meanwhile, Official HIGE DANdism's "I LOVE…" continues to dominate the digital metrics of the chart's methodology, ruling downloads for the third week, streaming for the fourth week, and video views for the second week in a row, respectively. The track holds at No. 2 on the Japan Hot 100 for the third week as figures for streaming (from 7,146,456 streams last week to 7,940,200 this week) and video views (from 6,361,458 to 8,584,300 plays) surge. The song is now firmly lodged in the cycle that leads to long-lasting hits, and the band is now up against itself in the race against its mega-hit "Pretender" that is already set to rank highly in the 2020 mid-year and year-end charts.