Did a little research. Ayana Taketatsu is the Japanese voice of Azusa on K-On and the voice of Mirakurun in YuruYuri. If you don't know much about YuruYuri, Chinatsu draws comparisons (in the anime/manga) to a fictional character named "Mirakurun". For the record, Ayana is NOT the voice actor for Chinatsu, so I don't think the "seiyuu_connection" tag applies here.