At the beginning of 2023, Yesung released his debut Korean studio album, Sensory Flows in January followed by its repackage, Floral Sense the following month.

[3] On September 14, SM Entertainment announced that Yesung will conclude the "Sensory Series" with the release of EP Unfading Sense on October 4.

[5] On the following day, SM Entertainment announced that Yesung will hold a solo concert on October 21 and 22 at the Yes24 Live Hall in Gwangjin-gu, Seoul.

[10] The song is penned, composed, and arranged by Daniel Kim, who also wrote previous lead singles, "Small Things" and "Floral Sense".

[11] The second track is "Silhouette", a pop ballad with warm harmonies composed by guitarist and producer Greenism, Son-woo, Borr, and TSLW.

The lyrics, penned by Yesung and Min Yeon-jae aims to uplift the listener's morale by reminding them the person they can ultimately cherish and trust the most is themself.

[6] The songs from the EP and from Sensory Flows is included as part of his first Asia tour, Yesung Solo Concert - Unfading Sense.