To prepare for the upcoming university entrance exam, the young man has moved in to stay at his uncle's house in the city, where his uncle's wife, who graduated from a prestigious university, lives.

Not only that, she embodies the sophisticated beauty of a city woman. That night, after finishing her bath, the young man accidentally discovered her masturbating in the room.

She noticed him and looked at him, but contrary to Yuji's thoughts, she smiled at him. The next day, while helping Yuji study, she continuously revealed her sexy underwear.

How could a young man in the prime of his life resist Akiyama's beauty?! And for an entire month, the two secretly had an affair right in the house, even when her uncle was nearby...