CSR (First Love) have dropped their music video teaser for "HBD to You".

In the 'midnight version' MV teaser, CSR prepare to celebrate a special birthday. "HBD to You" is set to drop on November 26 KST, and it's the girl group's first release since their EP album 'Delight' this past March.

Watch CSR (First Love)'s "HBD to You" MV teaser above, and let us know what you think in the comments below.