- A surprise Christmas gift showcasing STAYC's unique winter vibes!
- Presenting the release of the unit song ‘Over U, Goodbye (Seeun x J)’ by members Seeun and J.

1. Over U, Goodbye (Seeun x J)
‘Over U, Goodbye (Seeun x J)’ is a sentimental folk ballad that evokes a warm winter atmosphere. The song begins with a beautiful guitar melody, reflecting on the clumsy and painful days of the past with sincere vocals in the first half. In the second half, it expresses anticipation for growth and the future with their airy vocals, which sounds like walking through a snowfield.