长瀞早濑 is an attractive, petite, and short-statured high schooler with long, straight black hair pinned to the right side with a pair of white hair clips. She has brown skin with noticeable tan lines in the shape of her swimsuit and large, expressive amber-maroon eyes. She has a metallic piercing on her upper right ear and both of her lobes are pierced, despite this she rarely wears earrings.
长瀞早濑 has a lean, athletic, slender and very flexible physique with a modest bust size which she is often ashamed about despite being pretty average sized. She is rarely seen without a sadistic, cocky, smirk that often displays her very prominent canines and has the tendency to widen the pupil of just an eye whenever she grins.
长瀞早濑 typically wears her school uniform consisting of a white button-up shirt and a navy blue skirt complete with a pair of sneakers and no socks. When not at school she usually sports a simple, practical, or tomboyish choice of clothing. She sometimes wears a cosplay outfit consisting of a cheerleader outfit, cat ears and large catpaws.
长瀞早濑 is teasing, energetic, sadistic and flirtatious when she wants to further tease somebody.