Girl group KARA's Hara passed out during a performance in Japan, and her agency reveals why.

On October 23rd, Hara fainted during a performance onstage at their Osaka City Hall 'KARA 2nd Japan Tour 2013 KARASIA' concert in Japan, and had to be taken offstage by staff.

A rep from KARA's agency DSP Media stated on October 24th, "Hara fainted suddenly during the Japan concert due to exhaustion. Fortunately, she only complained of mild dizziness. After she received medical attention, she rested and went back onstage to greet her fans."

The rep continued, "Hara is currently resting and trying to restore her health, and plans to continue with the next performance without a hitch. She is still receiving treatment in Japan."

KARA has been on their KARASIA tour in Japan, and will visit Yokohama, Fukuoka, Osaka, Nagoya, for a total of 7 cities.

Photo credit: Vogue Girl