Hio-tan is a female employee of the Uma no Hone comic shop. Her nickname is derived from the Japanese abbeviation for "not an otaku" (非オタ or Hi-Ota). Hio-tan, while dedicated, is a clumsy worker who frequently gets into trouble. She is easily embarrassed, and is the frequent target of Kantoku's teasing. She seems fascinated by BL comics.

Appearance-wise she has long light blonde hair, has big boobs and is fashion savvy. She lives alone in a run-down apartment.