S2IT drops 'Blue Crush' MV and performs on The Show

'Blue Crush' MV lands September 15

S2IT released the music video for Blue Crush on September 15 at 6 PM. The five members—Haru, Yeonsu, Sea, Hyobin, and Seungbi—then performed the track on SBS Life's The Show later that evening.

The single itself came out September 7, when the group held a media and fan showcase. Blue Crush opens with a clear music box bell sound before shifting into an intense jersey club rhythm.

The music video places the five members against a blue-toned, lyrical, dreamlike space filled with photographs, posters, and stars. Where their live stages lean into dynamic performance, the video focuses on the members' doll-like visuals, precise eye acting, and their chemistry as a complete unit.

From showcase to broadcast circuit

Between the September 7 release and the MV drop, S2IT worked through a run of appearances. They performed on MBC M and MBC every1's Show Champion, appeared on Arirang Radio's Radio'n Us, and the The Show performance on the 15th kicked off their full music broadcast campaign.

The group also attended the VIP preview of the animation Stitch Head: Secret Castle of Little Monsters at Megabox Dongdaemun in Seoul's Jung-gu. This was their first complete group appearance at a preview since debut.

"After debut, we attended a preview for the first time all together as members, and it felt like we made a special memory. It was really happy."

One week. One debut milestone. One jersey club single. S2IT packed it all in.