Harumi (ハルミ) was a girl seen in early chapters of the manga. When Karin Maaka attempted to suck her blood, she was interrupted by Kenta Usui and in return stole Karin's bag. She was discovered to be selling herself at the local Love Hotel by Fumio Usui in order to pay for living there after she ran away from her family. Eventually, Fumio forces the police to shut down the Love Hotel after posing as a student claiming to be forced into working at the hotel against her will and Harumi returns to her family.
Her real name is Miharu (みはる).