Yurikago no Otome-tachi

A high school for girls in the Taisho era features a popular dynamic known as "S," representing a special bond between upperclassmen and underclassmen. This relationship is tied to the phrase "S" meaning where one's heart lies, often associated with a unique individual. Tamaki, a gifted student, and Yukiko, the daughter of a military man, are expected to form a typical friendship distinct from "S," but circumstances suggest otherwise.