Yukimi is a reserved and enigmatic young girl with a slow speech pattern who frequently talks to her cat, Pero. She has made a solemn promise to the Producer, but details about this commitment are scarce. Yukimi refers to it as "forever," "unbreakable," and "never forgotten." She also emits a quiet laugh that sounds like "fufu" or "fufu," and sometimes giggles for no apparent reason. Despite her reticence, Yukimi is still a child who wishes to please the Producer. Starlight Stage suggests that she practices conversing with Pero in an attempt to improve her social skills. Her unusual behavior may stem from a lack of interpersonal abilities. In Cinderella Girls Theater skits, Yukumi appears quite peculiar and speaks haltingly with numerous ellipses. She believed Rena Hyodo to be a sorceress and found Tomoe Murakami's ideas about disciplining men intriguing. When the other idols decided to surprise her with Christmas gifts, she was taken aback by finding logs covered in mushrooms from Syoko Hoshi. Yukimi isn't particularly physically strong. She is highly committed to any role she assumes and often tries to convince herself that she embodies the character she portrays. During a talk battle, Yukimi witnessed her teacher breaking chalk on the chalkboard, but Koharu Koga's story ultimately triumphed over hers.