An was living a normal but peaceful life. - However, lately, she has been feeling a bit fed up and frustrated with her husband's particular fetishes. - Her brother-in-law, Hideto, senses this and provokes the lust that lies deep within her... - An, who was swayed by his advances and had a physical relationship with him one after another, continues to refuse his further advances. - However, her body is made to cum again and again by delicate and intense caress that her husband can never feel, and she cannot forget the pleasure she has never experienced before.