Lead single "Sexy in the Air" features sharp electric guitar sounds, and expresses a strong sense of identity and desire for change.

"The Unknown Sea" has an acoustic sound and "lyrical emotion", "Crush" and "Say Less" belong to the electropop genre, and "Deja Vu" evokes a "dreamy" mood.

[7] Ahead of the EP's release, Taemin uploaded various promotional materials to his social media accounts, including trailers, concept images and teaser videos.

[7] Taemin hosted a listening session for fans on August 16 at CGV Yongsan in Seoul.

On August 31, he embarked on his first world tour, Ephemeral Gaze, beginning with shows at the Inspire Arena in Incheon.