Hina Serizawa has felt intense pleasure from anal penetration since losing her virginity, far surpassing ordinary sex. Her deeply masochistic, perverted nature is further drawn out by Queen Ranazuki Rami. Using vicious anal expansion toys, the Queen stretches Hina's anus to an extreme degree, transforming it into what's known as an "ex-hole." In the opening interview, just hearing questions about anal stimulation causes her underwear to become completely soaked—an extreme reaction that shocks viewers. She eagerly participates in the warm-up with fingers, greedily swallowing four fingers in no time, a voracity that even leaves the Queen astonished.