Kana is one of the older Haibane residing at Old Home, recognized for her practical and mechanically inclined nature. Her background as a Haibane is typical of her kind; she emerged from a cocoon with no memory of her past life, named for the dream she experienced, and now lives in the walled city of Guri. She holds a job at a clock tower in the center of the town, a position that suits her technical interests and abilities.

Personality-wise, Kana is noticeably tomboyish and possesses a sharp, sarcastic wit. She is spirited and quick to act, often displaying an easy-going but driven demeanor when she has a goal in mind. Her thinking is technological and practical, preferring to ground herself in the solid reality of machines and tangible work rather than abstract or mystical concepts. For instance, her first reaction upon seeing a new cocoon is to fetch a hammer, revealing her instinct to solve problems through direct, physical action. This practicality extends to her view of the world; she understands the rules of Giri better than most but is also the least ready to believe in its magical elements, as she lacks faith in what she cannot see or measure. Despite her teasing and sometimes brusque exterior, she has a kind personality underneath and cares deeply for her fellow Haibane. She can become overwhelmed by the mysteries of her existence, but she ultimately reverts to her reliable, practical side.

Kana's motivations are tied to her need to achieve specific personal goals before she can take her Day of Flight. A key objective for her is to repair the old, broken-down clock tower located on the Old Home campus. This project represents something she wants to accomplish for herself. However, her development involves learning to work not just for her own satisfaction but for others as part of a team, contributing to necessary projects rather than only the ones she finds fun. In the story, she serves as a grounding presence, offering Rakka a tour of possible jobs and sharing her pragmatic philosophy about the Haibane's place in the town. She explains to Rakka that the crows, the only creatures that can fly over the city walls, must not be fed lest they become dependent and lose their freedom; this scene highlights her belief in self-reliance and her understanding of the delicate balance within their enclosed world.

Kana's key relationships are with the other inhabitants of Old Home. She and Nemu share a close bond, frequently teasing each other. Her dynamic with Hikari is sibling-like; they may pick at each other due to their different temperaments, but they are ultimately fond of and dependent on one another. Kana also looks up to Reki as a figure of authority within their home. Her relationship with the younger Haibane, Rakka, is that of a more experienced senior guiding a newcomer. Kana's development is most evident following the departure of Kuu, a younger Haibane. While she could accept Kuu's leaving, the event forces her to struggle with her inner feelings about the Day of Flight, an experience she is not yet ready to fully understand. This event pushes her to grow, and by the story's epilogue, she is seen beginning to adapt to new responsibilities and work collaboratively.

In terms of notable abilities, Kana has a natural knack for machinery, engineering, and repair work. Her employment at the town's clock tower and her personal project fixing the Old Home clock demonstrate her skill with timepieces and her technical aptitude. Her practical mindset is itself an ability, allowing her to clearly explain the "ground rules" of Giri and function effectively within its systems, even when she questions their deeper meaning.