After being fired from his job and kicked out of his house, Yusuke, a young man, ends up staying with his older brother and his wife until he can find another job. However, he has no place in their house and is constantly being scolded by his brother, who says, "You're a pathetic man, still a virgin at 30." Wanting to gain some confidence, Yusuke makes a lifelong wish to his brother's wife, Aoi, to take his virginity. Feeling sympathy for Yusuke, Aoi allows her body to be taken by her for a little while, but the moment she penetrates her, she is hit with a tingling pleasure...