Extremely athletic girl and also a childhood friend of Momo Chitoseya. It was later revealed she is in love with Momo and is possessed by a Lesbian Kappa. The Kappa is making Aizawa surpass her human limits in terms of running, griping, jumping and overall physical strength. She was later given a charm to keep the Kappa from possessing her. She occasionally lets go of the charm in order to fight enemies that she can't normally defeat. She becomes a trusted friend and comrade of Yatsuki shortly after the Kappa incident.