Taro comes to visit his busty aunt Hana, whom he admires, in the countryside. He gradually becomes unable to resist Hana's big boobs up close, and he musters up the courage to confess his feelings to her. Hana then tells him about a rural custom: "The women of this village will take a virgin's virginity if asked." Taro enjoys Hana's obscene body and her overly large breasts to his heart's content. After that, Taro, unable to contain his desire, frequently seeks Hana, and the two of them end up in a relationship that goes "beyond customs"...