The lone first-year student who barely speaks and sword fights with a stick, Isaki expresses how she feels in the form of physical actions. Bullies avoid her (they fear her), and nobody wants to be friends...until she meets Aimi. Aimi and Isaki grow to be good friends over the course of the series, allowing her to express her feelings more verbally. As Cure Saint, she can create shields to ward off attacks with a raise of her hand. She can use her Mallow Harp to generate a windy blue counterattack, blue feathers of light, or stepping platforms. Her finishing attack is Holy Slash, and is the guardian angel of strength.