Fans worldwide were shocked upon hearing that Sunny was hospitalized during SNSD's Japanese concert in Saitama. Reportedly, Sunny fainted during the concert and so she went straight to the hospital to recover. One Japanese newspaper reported, "At the SNSD concert at the Saitama Super Arena on June 5th, Sunny fainted due to overwork and was moved to the hospital." After receiving treatment, Sunny demonstrated her fighting spirit by coming back directly for the encore stage. As she walked onto the stage, she cried and apologized to her fans for making them worry. One related source said, "Her condition wasn't good before the concert. This won't affect their schedule." SM Entertainment revealed that Sunny was just fatigued and there was no major health issues. We know that the girls are working over-time and investing everything they have into their promotions, but health should always come first! Source: Newsen, Star News via Nate