A man falls in love at first sight with an innocent girl with big breasts, and this is his crazy plan. He remarries her mother and invades her life as her stepfather. He plays the role of a caring father, and gradually develops her body to his liking. Hana, who knows nothing, has her breasts developed as she is told, and before she knows it, her sensitive breasts become orgasmic, and she desires her stepfather's perverted acts, which he calls massages. The excessive pleasure leads to an illusion of love for her stepfather...