"Must be now" is the 13th single by Japanese idol girl group NMB48.

[1] It was number-one on the Oricon Weekly Singles Chart[2] with 307,036 copies sold.

[3] It was the second best-selling single in Japan in October 2015, with 326,308 copies.

[4] It was also the eighteenth best-selling single of 2015 in Japan according to the Oricon Yearly Singles Chart, with 386,320 copies sold.

[7] An alternative dance shot version with full-size song was published on YouTube.