Hermione Granger, Service Girl Slut
Every semester, four girls across the four Hogwarts Houses are chosen to become school service girls. Service girls are tasked with the extraordinarily important duty of providing on-demand sexual service to all their fellow classmates, and are forced to wear enchanted metal collars that ensure they cannot disobey any order for sexual service. With so many students and only four girls to satisfy them all, service girls often attend to their classmate’s needs for hours and hours a day, sometimes even longer.
Hermione doesn’t like being a service girl, but she really doesn’t have any choice in the matter.