Eiha Kudō is an associate professor of ethics at Tsukinomiya Women's College. In this capacity, she serves as the professor for Shiori Yomiuri, who is one of the students at the institution. Her role in the story is primarily defined by her academic position at the women's college, where she provides instruction in the field of ethics. The available information does not provide further details on her background, personality, motivations, key relationships beyond her professional connection to Shiori Yomiuri, character development throughout the series, or any notable abilities she may possess.