Kyouko Hori is one of the main protagonists of Horimiya, along with Izumi Miyamura. She is a student in Class 3-1 of Katagiri Senior High School. Kyouko is considered to be a very beautiful and cute girl with mid-back length chestnut-brown hair that she usually ties up into a bun or ponytail when dressing casually outside of school with bangs swept to the right, golden-brown eyes and a tall, slim figure. Kyouko is most often seen donning her normal school uniform, which consists of a short-sleeved white shirt (long-sleeved in the winter), a red bow around her neck, a dark pleated skirt, black knee socks, and shoes. She occasionally wears her uniform vest, sweater, or blazer. At home, Kyouko dresses in relatively casual and simple attire such as plain t-shirts and leggings or jeans. She keeps her hair tied up and at times, styled with hairpins. When cooking, she wears an apron. Kyouko is normally a very energetic and popular person who always creates a happy atmosphere around herself. She is a hard-worker in all aspects of her life, and, according to Izumi Miyamura, she scores above 90% for all her tests. When nervous or embarrassed, she tends to switch to a violent state. This is seen when Kyousuke Hori asks if Miyamura was her boyfriend, resulting in her turning red and shoving a hot ladle into his face. When she does ear cleaning, nail clipping, or massaging, she does it aggressively, which makes her feared by her family, her friends, and Miyamura. Miyamura has also mentioned in the chapter―that a q-tip looks like a weapon with a considerable offense when Hori wields it. Hori is somewhat of a masochist- however this is only when it comes to Miyamura. Whenever he suddenly flips his personality to that of an abusive boyfriend for a short while (at her request), Hori enjoys the treatment and feels refreshed afterward. This is probably due to the fact that Miyamura is always calm and non-abusive. She is also shown to be very jealous when girls are flirting with Miyamura to the point where Yuki Yoshikawa and Tooru Ishikawa call her "Ice Queen". In some parts of the manga, she is also referred to as "Hannya" or the "Goddess of Jealousy". Over the course of the story, she does not seem to be too bothered with girls talking to Miyamura anymore but instead, worries that he might love a man. She once told him that it's okay to love another woman but not a man.