Hayase yuuka 16 y.o second year she treasurer of the Millennium Academy Student Council, "Seminar" with noa as secretary in club. Yuuka wilds a sub machinegun She strict about money A prominent mathematical genius even amongst Millennium's, she supervises the budget management of the Millennium.yuuka is pro accountant. Yuuka personality type is ESTJ, but she is also ENFP, and there's some ENTP/ENFP. She very close with sensei and care to sensei she always help sensei with her work