Eri, a Japanese language teacher about to marry her colleague, starts to feel the temperature difference between them as her fiancé begins to talk about changing jobs because teaching doesn't pay well. Eri loves teaching and feels the gap growing between them. Meanwhile, the school staff member Utsugi is found to be a writer, and their relationship deepens rapidly. However, Utsugi was writing erotic novels. Eri becomes influenced by the novel written with herself as the model and gradually becomes bolder like the protagonist of the story...
