Hallyu girl group KARA continue to sweep overwhelming popularity in Japan, adding up another feat to their impressive list of achievements in the country.

KARA's Japanese version of "Step" has reached number one on the mobile music charts in Japan. The album, released on February 22, stole the top spot within a day of its release on the Japan's largest mobile site Recochoku.

In related news, KARA is currently in the midst of preparations for the second leg of their "KARASIA" tour, which will take place in Japan starting April 14. The group several cities including Yokohama, Osaka, Fukuoka and Tokyo.