Yuuka Hayase

Serving as the dedicated treasurer for Millennium Science School's student council, known as Seminar, this second-year student manages the institution's entire budget with unmatched precision. Her mathematical intellect stands out even among the academy's elite STEM-focused student body. While she possesses a remarkable mastery of the abacus, she often unconsciously manipulates its beads as a nervous habit whenever she faces internal stress or emotional tension during complex calculations.