Ryuuko Mifune is a supporting character in Denpa Onna to Seishun Otoko. She is a lively, stylish young woman who appears as one of the people around the protagonist’s daily life, helping flesh out the series’ eccentric cast. As a minor but memorable character, she contributes to the story’s slice-of-life atmosphere and adds contrast to the more unusual personalities in the show. Her presence helps broaden the social world surrounding the main characters.