Throughout most of the series Yumi has an inferiority complex toward persocoms, and becomes upset at any mention of a human-sized persocom. However, she does carry a small persocom, shaped like a rabbit, on a key chain that can only do basic functions. In the manga she says that she has a larger persocom, also shaped like a rabbit, at home. In one episode of the anime it is revealed that one of those functions is a cell phone, which is later used by Chi to determine her location.
Love storyThe reason for her inferiority complex is that while Yumi was working at Chiroru she fell in love with the manager, Hiroyasu Ueda. She gathered the courage to tell him, and found out that he reciprocated her feelings. However, Yumi later discovered that Ueda had previously been married to a persocom that he had named Yumi (see Hiroyasu's entry) and she thought that he would compare her to the persocom Yumi and find her inferior.
However, Hideki eventually manages to persuade Yumi that Hiroyasu wouldn't have started anything if he didn't love Yumi for who she was, and he and Yumi resume their relationship.
Voiced by: Megumi Toyoguchi (Japanese), Julie Maddalena (English)