Kaoru is a celebrity at her school and belongs to the theater department there. She is very popular with ladies, who she dubs her "little kittens". In particular, Uehara Himari and Rimi Ushigome have a tendency of blushing furiously in her presence. She likes to read philosophical books and poetry, but doesn't really understand it. Outside of the band, she is also friends with Shirasagi Chisato.