After being fired from his job and kicked out of his house, Yuta, 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, Yuta makes a lifelong wish to his brother's wife, Minami, to take his virginity. Minami sorry for Yuta, Minami allows her to have sex with him for a little while, but the moment he penetrates her, she is hit with a tingling pleasure...