A month ahead of their Japanese 1st full-length album release, T-ara made a promise with their fans.

As announced previously, T-ara plans to release their Japanese debut album entitled, 'Jewelry Box', on June 6th. The album is already receiving a lot of interest as it has ranked #1 on the pre-order chart of�Japan's most popular music retail site, Tower Records.

To thank �fans for their support, Core Contents Media stated, "If the album sells 500,000 copies, we will open a free guerrilla concert within South Korea and the center of Tokyo, Japan." Agency officials predict that the album will sell around 300,000 to 400,000 copies, so 500,000 copies doesn't seem too far out of reach.

The new album will contain "Bo Peep Bo Peep", the song that landed�T-ara on the #1 spot on Japan's Oricon daily and weekly charts, along with Japanese versions of�"Ya Ya Ya", "Roly Poly", and "Lovey Dovey", in addition to new tracks.

T-ara is currently in Japan to prepare for their album release and will hold a concert there in June. T-ara also invites fans to their fan club inauguration as well as first solo concert in Korea this coming July.

Source + Photo: Naver