A high school girl rides a bicycle with a generous amount of aphrodisiac in the saddle. After riding for a while, the vibrations hit her clitoris and uterus directly, and she gradually goes into a state of ecstasy. When she stops the bike and checks her underwear, she sees that her pussy is soaking wet! Even though she is surprised, she can't stop masturbating, rubbing her crotch against the saddle. These high school girls lose their reason with pleasure and become lewd women, and it's erotic!