During a summer vacation, the boy went back to his hometown to play, where he stayed with his uncle and cousin Miharu Usa. The days of living here are really very hot, the weather is hot, but there is no air conditioning like in the city, his house. But in return, there was Miharu's sister, who often changed clothes right in front of him and even masturbated with her sweaty body, he was nestled in a corner and masturbated with her, and then suddenly she saw him...