Yuuka Hayase

Academy: Millennium Science School
Year: 2nd Year
Birthday: March 14th
Height: 5'1"

Enrolled in the Millennium Science School, Yuuka is the treasurer of the student council known as "Seminar".

A prominent mathematical genius even amongst Millennium's STEM-rich student base, she supervises the management of the school's budget.
Yuuka's speciality is the abacus, and she has a habit of counting on one in order to compose herself when faced with complex and troubling matters.

(Source: Blue Archive Wiki)