The EP was entirely produced by Hyolyn and it features six tracks including the lead single "Say My Name".

[4] [5] [6] Special single "Bae" was released after See Sea, the song peak at number 99 on the Gaon Streaming Chart and peak at number 34 on the Gaon Download Chart.

[9] The singles Dally, See Sea and Bae was promoted by Hyolyn through busking performances on Hongdae, Gangnam Square, Bupyeong and Caribbean Bay.

"See Sea" was promoted once on KBS's Music Bank on July 27, 2018.

The promotion of the song "Say My Name" started on August 20, 2020[10] on Mnet's M Countdown followed by performances on MBC's Music Core & Show Champion.