S.I.S has dropped their first set of teaser images.
The girls will be coming back with their 2nd single "Say Yes!", and they've just released their first two group teaser images. The song "Say Yes!" is an electro futurepop genre, and the S.I.S members participated in making the choreography.
The girls will be releasing more teasers according to their schedule until their comeback on September 20th, so stay tuned.