Saki Hayama is a serious, honor student-type beautiful girl, but she harbors a hidden sexual desire she can't tell anyone. Along her daily commute, old traditional Japanese houses line the path, one of which has become her secret rendezvous spot. Coming here in her school uniform, she's initially startled by sudden intimate touches, yet gradually succumbs to the pleasure. Ruthlessly impaled on the man's erect penis, she drowns in ecstasy, experiencing a deep, soulful satisfaction as her pure heart unravels and her concealed desires are finally fulfilled.