Naozumi Takahashi (高橋 直純, Takahashi Naozumi, born December 6, 1971) is a Japanese singer and voice actor who released the two popular singles "Soshite Omae ni Deaeta Dake De" and "Muteki na Smile". Naozumi's single "Ashita No Kioku" was used as an opening theme for Black Blood Brothers. (Via Wikipedia)