Seven member Korean girl group RAINBOW has announced that they'll be making their official Japanese debut this September!

For those of you who are unfamiliar with the group, RAINBOW consists of seven members who each have their own color much like their namesake: Jae Kyung (red), Woo Ri (orange), Seung Ah (navy), No Eul (blue), Yoon Hye (purple), Ji Sook (green), and Hyun Young (yellow). The girls made their Korean debut with the mini-album "Gossip Girl" in 2009, and have since become a force to reckon with in the Korean idol scene.

RAINBOW will make their debut with a Japanese version of their song "A" sometime in September under Universal Music Japan. Since the girls were unable to perform their signature "ab dance" found in the choreography due to stricter broadcast standards in Korea, the girls of RAINBOW hope it will spread like KARA's famous "butt dance" now that they can perform it live in Japan.

"We have great interest in the culture of Japan, so we're happy to be able to go to Japan now," said RAINBOW about their Japanese debut. "We're always interacting with all our (foreign) fans who pay attention to (Korean) media through television and the internet, but we feel incredibly happy about being able to make eye contact and bond with (those fans) from now on."

RAINBOW also mused about their "ab dance", commenting, "We have to keep our abs in shape for the belly button dance, but when we go to Japan, we're worried about how we can keep self-control when there are so many yummy foods."

Stay tuned for more information about RAINBOW's upcoming debut!

Source: natalie