Konoe Tsuruma is one of the main characters in the anime series 'Kono Naka ni Hitori, Imouto ga Iru!'. She is a gentle and soft-spoken girl who attends the same school as the protagonist, Shougo Mikadono. Konoe is known for her elegant demeanor and caring nature, often looking out for Shougo's well-being. Her role in the series involves helping Shougo navigate his complicated life as he tries to identify his mysterious half-sister, while also dealing with the affections and antics of the girls around him.