Yasuko is a popular third-year senior at Matsuoka Girl’s High School. She is a cool upperclassman and the captain of the basketball team, though Fumi mistakes her for being in the literature club when they first meet. After visiting Fujigaya Girls Academy and rejecting Kyōko’s confession, she asks out Fumi, who accepts. Yasuko developed romantic feelings for a teacher, Masanori Kagami, when she was attending Fujigaya. After his rejection, she switched schools and changed focus from drama to basketball. Yasuko has three older sisters who all attended Fujigaya: Shinako, Kazusa, and Kuri.