One of Bokuto station's newest recruits, who are teamed up with Sakura Fujieda, a fellow recruit. She is taken on an introductory journey through the city courtesy of Miyuki and Natsumi, so that she and Sakura can familiarize themselves with the tasks expected of them as police officers.

First impressions portray Kaori as a fairly straightforward girl who isn't afraid to voice her concerns clearly, though she is as uncertain about her abilities as a police officer as Sakura, at least at first.