Miyo is a very pretty young girl of average height with messy light brown hair that she sometimes ties up in a messy ponytail.
On a day of the local shrine festival, Miyo gets upset with her mother and runs away to a nearby bridge. She finds a mysterious cat, who sold masks to people who wanted to leave away from their real lives and society. After receiving the Cat Mask, she changes into her cat self every time to meet Kento Hinode and often to leave out of family issues.