After being fired from his company and evicted from his home, the young man Yuusuke decided to stay at his brother's house until he found a new job. However, even at his brother's house, he had no place to belong, and every day he was berated with 'What a pathetic man, still a virgin at 30.' Wanting to gain confidence, Yuusuke asked his sister-in-law Aoi to take his virginity, expressing it as his lifelong wish. Sympathizing with Yuusuke, Aoi agreed to let him have her body just a little, but 'the moment of insertion' was overwhelmed by a numbing sensation of pleasure...
