Rin has messy black (dark blue in the anime) hair that extends to eye level, pale skin, and deep blue eyes.
Before going to True Cross Academy, Rin wore a blue hoodie over a pink T-shirt and black jeans, giving the impression of a rebellious character. He was also seen on one occasion wearing a white jacket with large pockets and various decorations on it and black fingerless gloves. 
her flames are blue when he draws her katana, her tail is like the color of her hair