Instagram/Sho Hirano & Ren Meguro Music Number_i's "3XL" returns to No. 1 on Billboard Japan Hot 100, fueled by 383K physical sales and multi-format chart dominance. May 10, 2026 AceShowbiz - Number_i's hit single 3XL has reclaimed the No. 1 position on the Billboard Japan Hot 100 chart, as announced on May 6. This marks a significant return to the top after its initial debut, driven by the recent physical release of the single. The track, which is the lead song from the group's third single and produced by member Sho Hirano, first debuted at No. 1 on the Japan Hot 100 dated February 4.