Junna Shiina! She's a popular Japanese voice actress and singer, known for her work on various anime series and other media. If you're looking for helpful text about her, here are a few key points:
A Deep Dive of the Junna-Nana Revue in the Movie ... - Tumblr junna shiina
Unlike many seiyuu who only release character songs, Shiina has pursued a parallel career as a solo singer. junna shiina