A woman recounts a secret she will never forget. Her husband’s best friend Takashi comes to stay during a business trip; three years older than her husband, he has always seemed like an older brother to him. Takashi suddenly forces himself on her, yet despite her disgust she begins to feel his attraction as a man. The more she tells herself it is wrong, the fiercer her desire becomes, drawing her into repeated sex and creampies with the friend who may leave her pregnant.