Yuusuke, a young man who was fired from his job and kicked out of his house, ended up staying at his older brother's house until he found a new job. However, he had no place in his brother's house either, and he was scolded by his brother every day, saying, "It's pathetic that you're still a virgin at the age of 30." Yuusuke, who wanted to gain confidence, asked his brother's wife, Yuna, to take his virginity, making a lifelong request. Yuna, who sympathized with Yuusuke, allowed him to have her body, saying that it was only a little, but when he inserted it, she was overwhelmed by a tingling pleasure...