My grandfather's summer vacation, when he was estrus on the temptation of his grandson who didn't even know the character of sex and taught pleasure until he returned to his parents' house. Aria Oshima

The movie depicts a forbidden and taboo relationship between a grandfather and his granddaughter, Aria. The grandfather, overcome with desire, initiates a sexual relationship with Aria, who is initially innocent and unaware of the nature of their actions. As the story progresses, Aria becomes increasingly involved and engaged in the activities, despite initial reservations. The theme explores the complexities and power dynamics of an incestuous relationship, raising questions about consent, morality, and the consequences of such actions.