Kagano Aya

She is in charge of order in her hometown. She is a reliable older sister.
She was originally a medical student, aiming to become a doctor.
She has used her excellent insight and medical knowledge to the fullest in order to survive.
She is a member of the town's medical team, treating the injured and managing medicines. She
is highly trusted by Hikari and the others, and is involved in many aspects of running the town.
Her trademarks are her glasses and long black hair.