Miyuki Konno, younger sister of Makoto Konno, maintains a close bond with her through shared daily routines, such as ensuring Makoto wakes on time—a task highlighting her responsible nature and attentive care for her sister’s well-being. Her protective instincts emerge during moments of risk, as seen when she intervenes to prevent Makoto from recklessly testing her time-leaping abilities, showcasing vigilance toward Makoto’s habits and safety.

With chest-length black hair and brown eyes, Miyuki embodies a relatable teenage appearance. Her connection with Makoto extends to shared preferences, including a mutual fondness for pudding, reinforcing their sibling camaraderie. Though not central to the overarching time-travel narrative, her presence emphasizes the familial bonds and mundane yet meaningful interactions that anchor Makoto’s life beyond extraordinary events.

Miyuki’s role remains focused on these supportive, everyday dynamics, with no expanded backstory or development detailed in existing portrayals. Her characterization consistently reflects a grounded, caring sibling figure, contributing texture to Makoto’s personal world without diverting into broader plotlines.