Kasumi has a light skin tone, dark red eyes, and long black hair that she wears in two long and messy pigtails. She wears white hair clips and keeps two strands of hair in the front using ties that look like bandages. Her hair is notably pretty messy. She dons a dark blue and reddish-orange seifuku with a symbol on the cover, which is likely the logo of her previous school. She wears a white undershirt, a long dark blue skirt, and light brown boots.