Catherine is a mysterious 22-year-old woman who has a charming face and a "well-proportioned" body, which makes men turn and stare. She also has a "Koakuma (Gyaru) air" about her, which happens to be Vincent's type, and the two end up spending the night together after she seduces him. Her carefree behaviour begins to disturb Vincent's life. It is after meeting Catherine that Vincent begins to have nightmares.