Kaoru used to be the hairdresser for the band ZLAY and claimed that she had sexual relations with one of the members, much to Julia's horror.
She is a playful person and likes to stir up trouble, often going out of her way to make Julia and Ran upset. She is rather shocked that Ran is dense enough not to have any idea Julia is crazily and intensely in love with her.
She seems to have a thing for Saeki, though most of this might just be her teasing. Kaoru often makes advances on Saeki, but is always pushed away. She seems to have some sort of entanglement with one of her customers, Haruna, although she does this to mercilessly tease the younger girl who clearly has a crush on Kaoru.
For some reason, both Julia and Ran come to her for advice, though it's never useful and it rarely ever makes them feel better. It seems that Kaoru is amused at making them feel worse about their problems rather than fixing it for them.
Kaoru is often smacked around by Saeki whenever she does something stupid. She is almost always cutting or styling Haruna's hair whenever she appears in a scene.
Vova
