Ayako Hiiragi  

, 柊木 綾子

Takahiros cousin is a school physician at Winford Academy. During the evenings and weekends, she runs a cafe called "Tart Time," where Mio and Noel work as part-timers. Akane often hangs out there too. The cafe also serves as her living quarters, along with Takahiro's. She enjoys teasing both of them a lot.