LE SSERAFIM has officially kicked off their comeback countdown. The group unveiled a preview of their upcoming lead single.

Source Music released a short-form video on the group's official YouTube channel on April 22. The clip captures moments from the "Time to Celebrate" (#TimeToCelebrate) campaign.

Part of the new track was revealed in the video. "Celebration," a B-side from their upcoming 2nd full album "PUREFLOW pt.1," was used as the background music.

"Celebration" is set to drop on April 24 as the lead single. The track blends melodic techno with hardstyle, delivering an upbeat rhythm and addictive melody.

Kim Chaewon and Huh Yunjin participated in the songwriting credits. The lyrics reflect a moment of embracing inner strength while facing fear, adding a layer of authenticity.

As part of their promotions, LE SSERAFIM is running the "Time to Celebrate" campaign. The project encourages fans to share and celebrate meaningful moments in their lives.

The campaign is already gaining strong traction. Celebration videos posted on social media have surpassed 31.75 million cumulative views, while posts using the hashtag have exceeded 360,000.

Meanwhile, LE SSERAFIM will release "PUREFLOW pt.1" on May 22 at 1 PM.