[1][2] In March 2015, CUBE Entertainment launched the multi-national girl group CLC including original members Seunghee, Yujin, Seungyeon, Sorn and Yeeun.

[5] The group made their official debut on March 19 at Mnet's M Countdown performing with the tracks "First Love" and their promotional single, "Pepe".

Duble Sidekick, Seo Jaewoo, Playing Kid, Yanggang, and BTOB's Jung Il-hoon participated in the creation of album as producers and lyricist.

[9] At their debut showcase, the members revealed that all the proceeds of the album will be donated to children with developmental disabilities.

[10] In 2016, CLC released a Mandarin version of their song, "First Love" (初恋), for the Chinese drama, The Best Meeting (最好的遇见).