Kanae Mitani arrives in the narrative as a third-year student at Fuu Sawatari's high school, quickly earning respect within the newly formed photography club. Though her initial demeanor appears sharp-tongued and confrontational, her genuine nature is warm, supportive, and introverted, frequently revealing a nervous habit of repeating phrases. She holds Fuu in profound esteem, consistently yielding to her judgment despite the seniority difference, and deeply cherishes Fuu's impact on her life.

Armed with a Pentax Q digital camera, Kanae dedicates herself initially to landscape photography, meticulously deleting any images that fall short of her technical expectations—a stark contrast to Fuu's embrace of film and her focus on people and imperfect moments. Through the club's activities—presenting at festivals, entering cherry blossom contests, visiting professional exhibitions—Kanae's perspective broadens under Fuu's mentorship, leading her to appreciate new subjects and photographic approaches.

Her personal journey centers on conquering deep-seated anxieties about the future. Before joining the club, Kanae drifted without direction, but her experiences alongside Fuu and their friends cultivate newfound confidence and purpose. She treasures the idyllic days of club outings and group adventures, like a concert trip to Mitarai, viewing them as transformative. As graduation approaches, however, she wrestles with the certainty of change, voicing sadness during a New Year's sunrise gathering and wishing these precious moments could endure.

Kanae's graduation marks a significant emotional threshold. While saddened by parting, she openly expresses immense gratitude to Fuu for fostering her growth. Bolstered by Fuu and their friends, she embraces her post-secondary ambitions, graduating with acceptance into her first-choice institution. Her evolution embodies the narrative's core themes of embracing life's uncertainty and the profound value found in fleeting, cherished experiences.