A sometimes rather rude and headstrong character from Kimi no Iru Machi. She first appears as Kyousuke's childhood friend, and later strikes up a close friendship with Akari.
Kiyomi is first introduced to Kimi no iru Machi's protagonist Haruto when he finds her visiting their mutual friend Kyosuke Kazama in hospital. Haruto quickly deduces that she is actually in love with Kazama, and the two form a sort of alliance. Haruto hopes to get back his girlfriend Yuzuki Eba, who is at the time dating Kazama, so he and Kiyomi plot to come between the couple and start relationships with them themselves.
Kiyomi is later introduced to Haruto's childhood friends, Akari & Takashi, both of whom she grows close to. Kiyomi is a fairly strong willed person who speaks her mind with little reserve, even if she hasn't made her feelings towards Kazama clear until recently. She is also quick to anger.