Harumi Kurisu is a Japanese woman with brown hair and grey eyes. She works in a school environment, performing her duties while wearing a nun's habit. Her responsibilities include upholding campus regulations, such as confronting unauthorized individuals like Yuuto Akiyama when he fails to provide proof of employment by Serena Ijūin. She becomes visibly angered when Yuuto dismisses her authority, accusing her of being a cosplayer rather than a legitimate employee. Her heightened frustration occurs as Serena arrives during the confrontation. Harumi is human, contrasting with the vampiric members of the Ijūin household.