SECRET NUMBER: public
작업은 공공 장소에서 이루어집니다.
SECRET NUMBER (시크릿넘버) is a six-member girl group under Vine Entertainment. Originally as five, they debuted on May 19, 2020 with the single "Who Dis?". They were originally set to debut on March 26, 2020, but it was postponed due to the worldwide outbreak of COVID-19.