Hori Kyouko is a beautiful and energetic high school student with chestnut brown hair, and golden-brown eyes. She often keeps her hair loose in school. She is a hardworking and academically successful individual, scoring above 90% on her tests. While typically cheerful, she can turn violent when embarrassed. She has an aggressive approach to tasks like ear cleaning and nail clipping, which can intimidate others. She exhibits a sadomasochistic tendency. She is occasionally jealous.