After building anticipation with a series of teasers, CSR has officially dropped the curtain on their much-awaited release, "HBD To You"!

As previously revealed, this latest song is not just any release—it's a special commemoration of the first anniversary since the inception of their beloved fan club, MAEUM. In the heartwarming music video, the members are seen preparing for a birthday celebration for their fans, serenading their supporters in English with heartfelt melodies.

Don't miss out on the full MV—watch the magic unfold above!