Hori Chizuko (堀 千鶴子 Chizuko Hori?) is a first year student at Oodachi High School and one of the managers of the school's sumo club.
Appearance
Chizuko is a girl with long braided hair who wears glasses and wear her school's uniform.
Personality
Chizuko has a shy, introverted personality. She was seen in the beginning being harassed by a man in the subway, when Hinomaru protected her. Since then, she looked for him, until she found the sumo club. She later joined after sharing videos of their inter-high qualifiers to the school, as a way to repay Hinomaru, showing a great deal of knowledge acquired from books, especially when it comes to history, because Hinomaru is really interested in, and good at Japanese history.