Rising Sun Rock Festival
In February 2019, it was announced that the band would be reuniting to perform at Rising Sun Rock Festival 2019 in Ezo. Although the first day of the festival was cancelled and Number Girl did not perform, they had already announced a four-date Japanese tour by this time, beginning at Hibiya Open-Air Concert Hall on August 18. The day after the Hibiya concert, they announced a further twelve Japanese tour dates, set to span over December 2019 to February 2020.