Midori Yamanishi is a second-year student in Class 2-F at Kamiyama High School. She has a slightly tanned complexion, is of average height, and wears her brown hair in a bun secured with a bow-scrunchie, with brown eyes. In the story, she participates in the class film project directed by Fuyumi Irisu, taking on a role in the production. As a supporting character, she is depicted as energetic, talkative, and naturally outgoing, making friends easily. Her personality is warm and empathetic, often showing a strong desire to help others and support those around her. She is curious and has a sharp eye for detail, which contributes to her ability to notice subtle clues and understand people's motivations. Throughout the series, she interacts with the members of the Classic Literature Club, particularly Houtarou Oreki. She frequently teases him about his lack of enthusiasm and encourages him to engage more actively in club activities, providing a lively counterbalance to his reserved nature. Her role involves bringing fresh ideas and perspectives to the group, challenging them to think differently. She also plays a part in solving various mysteries by connecting with others and uncovering hidden truths. While she is not a central character, her presence adds to the social dynamics of the story and helps drive the group's interactions forward. Her ability to build rapport and her intuitive understanding of people make her a useful ally in the club's investigations. She does not undergo significant personal development over the course of the narrative, but her consistent traits of friendliness, perceptiveness, and helpfulness remain integral to her function in the ensemble.