Miho, a high school girl, is sexually trained by her mother's common-law father in order to protect her mother and her own life. In order not to disappoint her mother, she initially reluctantly accepts the many perverted acts he forces upon her, but once her immature body experiences an intense orgasm she has never experienced before, she is unable to return to normal and succumbs to pleasure. This is a shocking video of a Ke'ai high school girl being turned into a masturbator for a dirty old man!