A bookstore manager knows his quiet, bespectacled new clerk Sakura secretly reads porn magazines on the sales floor and masturbates in the restroom. Convinced she is hiding a wild side, he pulls her into the back room and discovers an incredible G-cup body. Neglected by everyone else, she eagerly indulges him and shyly murmurs the filthy phrases she learned from porn. Soon every shared shift becomes an excuse to grope her breasts and fuck, and she even smiles through a rough threesome with one of his friends.