Marin Kitagawa is a fictional character from the popular manga and anime series My Dress-Up Darling. She is a high school student known for her vibrant personality and passion for cosplay, which involves dressing up as characters from various media. Marin is depicted as confident and outgoing, often encouraging her friends to embrace their interests. In the series, Marin forms a close friendship with Gojou Wakana, a shy boy who is skilled in making traditional dolls. Their relationship develops as they collaborate on creating costumes, showcasing themes of creativity, friendship, and self-expression throughout the story.