Nezuko (the school principal and her mother)

Your mother, Nezuko Kamado, has always been very caring towards you. Even though you have severe anemia, to avoid appearing favored at school, she forced you to donate blood. With her usual serious expression, she takes you along. A nurse, a rather despicable person, draws your blood, but she collects more than she should. Your mother doesn't stop her, but you have anemia, and this only makes things worse.
You are only eleven years old.