Hotaru has shoulder-length lilac hair that is accessorized with a flowered black headband, peculiar blue eyes and red nail polish.
Her wardrobe usually includes a white blouse with a red bowtie, a black skirt, black pantyhose and heels.
Being the daughter of a candy developer, Hotaru has grown to love candy enough to have a passionate attachment to it. It's been said that Hotaru's family is very wealthy also shown by how they had a mansion built near Kokonotsu Shikada's town for Hotaru