Uika is shown to be a kind, considerate, positive and friendly girl. She is quite popular due to her cool appearance. As part of her kind nature, she is shown to care even about people she doesn't particularly know, such as when she interacted with Tomori in the planetarium, and later stopped her from falling down the stairs, which then led to her spending another moment with Tomori and giving her advice. Despite her kind nature however, Uika constantly wears a mask around others.