A second-year that and Uisho's co-worker at the school library. She is very shy and talks very softly Uisho develops feelings for Chizuka, noticing that she is very cute and Uisho's "type." But Chizuka breaks her heart when she gets very angry and gives her a menacing, tear-filled glare. Uisho is heartbroken and breaks down crying in Sumika's arms. Uisho and Chizuka have felt uncomfortable around each other ever since.<br /><br />
