A 19-year-old innocent beauty gradually awakens to eroticism. Her slender body reacts abnormally to extreme sex—abstinence, aphrodisiacs, and intense piston thrusting. Experiencing everything for the first time, she orgasms intensely and undergoes a real, full-body mega convulsion. Her fair, delicate, and highly sensitive body is pushed to the brink as relentless, brutal thrusting continues nonstop. Even after collapsing, the merciless pounding and vicious kissing persist. Eventually, her body arches violently at a 90-degree angle. Several months ago, Naruha Sakai arrived in the city from the countryside, only to be crushed by urban eroticism.