While in Anyang, Jinon, Kan, and Yejun all participated in a dance team that had included famous K-Pop star Rain.

[11] However, Jinon withdrew before their debut and suffered major health issues as a result; he battled depression and several eating disorders.

[10] Jinon also had a role in SG Wannabe's "Gashiri" music video alongside T-ara's Eunjung.

LeeU had always been a witness to the music industry due to his father, the famous trot singer Sul Woon Do.

From an early age, LeeU had wanted to pursue a singing career, so much so that he lost sixty pounds in one month during his first year of junior high.

Daegeon began his idol career under Xing Entertainment, a company most known for housing future members of U-KISS, Beast, and The Boss.

[16] Daegeon eventually moved on to Golden Goose Entertainment and debuted as a member of Double B 21, now known as Apeace.

[19] "Jiggy" was digitally released on January 8, 2010, and they held their debut performance the same day on KBS' Music Bank.

They released another single from the album, "친구졸업 (Friend's Graduation), with the English title "Wanna Be Your Love".

In January of 2011, member Kan was involved in a serious car accident going back to Seoul after filming for the drama Athena: Goddess of War.

The record company cited musical differences and Lee-U's desire to focus on a career as a solo singer.

The group left to Japan in July to promote the Japanese version of "One Love", "Feeling My Soul".