Dai-kun comes to his mother's countryside house during summer vacation to focus on his entrance exams. There, he's greeted by two older women, Reo-nee-chan and Asuna-nee-chan, who have always cared for him. Excited by their cute nephew's return, the two aunts playfully tease him to see how he's grown. They spend the summer engrossed in both Dai-kun's exam studies and intense, physical sex with the two aunts. It's a nostalgic summer filled with yukata (traditional summer garments), fireworks, and intimate moments. Please note that the content may vary depending on the distribution method.
