Главната героиня в мангата - тя е председател на ученическия съвет, като е избрана с 98% от всички гласове. Изключително красива и добра във всичко.

A high school senior and president of the school's kendo club, she is extremely skilled at close combat with a bokken. Calm and collected with a sense of pride in her skills, Saeko is among the most reliable of the group. Everyone can count on her combat skills to pull them through a crisis. Also throughout the journey, she begins to develop romantic feelings for Takashi. Not much is known about her family except for her father who had traveled abroad on a self-defense conference before the advent of the Outbreak. Saya's father, Souichirou Takagi, tells Saeko that her father once gave him guidance so to repay the favor, he gives her a very powerful sword, crafted in the Tokyo armory by General Murata during the Meiji Era.

Любовта на Кен, която той последва в Корея ... и стана каквото стана

Vice president for the underground student council.