Sandeul released a teaser photo of her new album "Thinking EP.1" on July 31 through her agency WM Entertainment's official SNS channel.

The released teaser lists Sandeul's Polaroid photos taken against the backdrop of the beach. Sandeul's unique fresh expression brings out smiles from fans, highlighting Sandeul's fresh charm and boyishness.

Sandeul's "Thinking EP.1" is expected to be a special gift for fans who have been waiting for Sandeul's music with a limited edition album containing new songs, including songs from the thought book series released earlier as a digital single. In particular, this album is expected to capture Sandeul's deeper emotions as well as her honest music story.