Kaede Kashiwagi is Sora Kashiwagi's aunt and the sister of his father, Mokuren Kashiwagi. Acting as Sora's primary caregiver during his father's travels, she resides in their household. Standing 182 cm tall with lilac hair and matching eyes, she typically dresses casually at home in a beige collared shirt, jeans, brown apron, and slippers.

Her personality shifts dramatically with eyewear: ordinarily gentle, clumsy, and nurturing, she transforms into an assertive, aggressively affectionate figure when wearing red-rimmed glasses, a persona that unsettles others. She reportedly uses this identity for professional modeling, acting, or directing roles, maintaining anonymity behind the glasses. Professionally versatile, she juggles writing, modeling, acting, and directing with significant fame across these fields.

Kaede consistently cares for Sora in a maternal role despite workaholic tendencies, prioritizing his well-being—such as nursing him during illness despite his reluctance. She extends this nurturing behavior to Mii-kun, treating him like a child while helping Sora care for him, openly expressing affection and occasional flirtation toward Mii-kun. Aware of Mokuren's history of sending dangerous artifacts, she proactively verified the safety of the Anubis statue Aayan before allowing Sora to receive it.

Notable quirks include napping in the sarcophagus that delivered Mii-kun and using a mandrake plant as an alarm clock. Tazuki Kamiya, Sora's friend, harbors a longstanding crush on her, which Sora occasionally teases him about. Her birthday falls on February 29.