Aika Sano is the primary female protagonist of the 2020 adult OVA and manga series Ane wa Yanmama Junyuu-chuu.

She embodies the "yanmama" archetype in Japanese media—a portmanteau of "Yankee" (referring to a slightly rebellious, former delinquent youth subculture) and "Mama". Visually, she is characterized by her blonde hair, which she usually wears in a ponytail, brown eyes, and a flashy gyaru-leaning fashion sense. Despite her bold appearance, she is depicted as a deeply warm, attentive, and maternal figure.