Natsuki has straight pastel pink hair, cut around chin length, and pink eyes. Her bangs are swept to the right, having two prominent strands of hair beside them. Her accessories consist of a red Japanese-style crossed hairclip, as well as two red ribbons tying two small ponytails on either side of her head, with the rest of her hair left down. Her canine teeth are longer than the rest of her teeth, making them visible when she opens her mouth wide enough.