Hikasa Yoko (日笠陽子) is a seiyuu and pop singer affiliated with I'm Enterprise. She is known for her role as Akiyama Mio in K-ON!. In 2013 she made her solo debut with the single "Utsukushiki Zankoku na Sekai". In 2014 followed her debut solo album "Colour". She's the oldest member of the group RO-KYU-BU!.
