Original: DSP Entertainment replaced with members Goo Hara and Kang Jiyoung, and Kara made their comeback with Rock U, which changed their image "Hip-hop" to "cute" and "playful".
Simplified: DSP Entertainment replaced members, Goo Hara and Kang Jiyoung, and Kara comeback with Rock U, which changed their image "Hip-hop" to "cute" and "playful".