 She went on to voice <unk> <unk> in the 2009 series <unk> ! and held the leading role in K @-@ On ! , providing the voice of protagonist Yui Hirasawa . She later took the roles of <unk> <unk> , in First Love Limited , and Kana Nakamachi , the protagonist of Kanamemo . In Minami @-@ ke : Okaeri , she reprised her role as Yoshino a second time . In 2012 , she voiced <unk> <unk> in Accel World , and title character Medaka Kurokami in the two seasons of the high school anime Medaka Box . In 2013 , she voiced Kon , the main character 's Familiar in Tokyo Ravens . In 2014 , she voiced <unk> in Black Bullet , and was the third gender main character Izana Shinatose in Knights of Sidonia , which was also broadcast as a Netflix @-@ exclusive series . 
