Girl group S.I.S acts as a three-man system.

On Oct. 8, JMG, the agency, said, "After deep discussion, members DAL and Minji, who need enough time to rest, will be working under a three-member system. We will do our best to support our members in various music activities and repay their love.

The agency JMG also said, "We promise to provide support to each of the three members to take advantage of their own strengths and work in various fields. Please give a lot of support and interest to S.I.S.," he said, heralding a three-color S.I.S.