Born in Hayama, H-cup big-titted young lady is repeatedly brought to orgasm by rough, intense thrusting. Gentle, refined, and sweet-natured, she gradually loses her composure as she experiences climax after climax, eventually transforming into a lewd, depraved woman. Though shy at first, she surrenders to pleasure each time she receives firm commands, becoming unable to resist as vibrators and electric stimulators bring her to climax again and again. In the end, she desperately pleads in a filthy, aroused voice, "Put your cock inside me…"—a transformation that sends shivers of excitement through you.