Aoi Yusa

Serving as the student council treasurer, this diminutive classmate of Sena possesses a petite stature and spiky, reddish hair that makes her appear much younger than her actual age. She displays a quirky, somewhat childish personality and maintains a one-sided rivalry with Sena, whom she views as a flawless ideal. Known for her eccentric fashion sense, she also holds a deep admiration for Kodaka, frequently praising his stylish and cool appearance.