Begins the story in her 3rd year of middle school. Chiro has an older sister named Yuri. Chiro is the secretary for the student council. She is short child like but has a beautiful face. Chiro frequently refers to herself in the third person and calls Ritsu, Ricchan. She is and is sociable, kind, childlike, common and a little dimwitted. She pouts, smiles, gets excited easily Although she has always been good at sports, dance and academics do not come easily. Chiro has been good friends with Ritsu most of her life and feels she know all of his faces. She gets along easily with Ritsu and the rest of his family.