Five close-knit girls from Class 3 of a certain grade at a girls' high school in Niigata Prefecture experience Tokyo's torrential rain for the first time during a school trip!! Arriving at the home of a seemingly kind old man, the unsuspecting high school girls, their underwear showing, are caressed until their bodies, sensitive from the rain, become aroused. Their innocent country girls are repeatedly penetrated without a condom by an incredibly powerful penis. (DVDES-800)

Five naive high school girls from the countryside, experiencing a torrential downpour in Tokyo for the first time during a school field trip, get lost and end up at the doorstep of a perfect middle-aged man. Their underwear peeking out from under his clothes arouses his lust, and he invites them inside. Taking advantage of their lack of sexual awareness, he roughly rubs their breasts and begins a brutal orgy!! Their still-developing vaginas are lined up and repeatedly penetrated by his penis, causing them to squirt and cum inside him ten times in a row without condoms!