 Her career as a musician began with her performance of the opening and ending themes of the anime series K @-@ On ! in April 2009 . In the same month , she and three other voice actresses debuted as the musical group Sphere with their single " Future Stream " . Later , K @-@ On ! ' s ending theme was given Animation Kobe 's " Best Song " award . She released her first solo single " love your life " in October 2009 , and has since released two albums and eleven singles that have placed in the top 20 of Oricon 's weekly charts . She was awarded " Best Musical Performance " at the 4th Seiyu Awards for her performance on the K @-@ On ! mini @-@ album Hōkago Tea Time with four other actresses . 
