Starting on April 2, Just B has been releasing small Polaroid motion video teasers done in each member's handwriting with the name Carmelia and the release date of April 12, 2023, at 12 pm KST. 

JM's translates to "This world, which seems too cold, sometimes feels very scare to me." The Polaroid shows a glimpse of the riverside in the city center. 

The next member is Geonu, which states, "May Colorful bright paints be sprinkled over the gray city."

The next motion polaroid belongs to Sangwoo with the following lyrics "I need your warmth, walk with me."

Lim Jimin is next in line with his Polaroid message saying, "Where the light hits, I will wait and we will smile."

Followed by Bain and the message, "May the love that is higher than the sky warmly shine by our side."

And finally, DY's, "I hope the warm sunlight falls on the frozen street even for a moment."

On April 8, they posted a digital cover signaling they will release their first digital single. The image states I hope there's some warm sunlight on the frozen street.