Hiyori, who was cheated on by her husband, will live separately, and for a while, she will be indebted to her sister's couple's house. Her sister's family warmly welcomed her, but her heart never cleared up. Hiyori, who had been peeping at her masturbating act by her sister's son Shuji, whom she met for the first time in a long time, was crawling next to her sister's sleeping. Hiyori writhed in her pleasure after a long absence, suppressed her voice so as not to be found out by her sister and accepted her Shuji's cock. Her older sister's husband, who was looking into her night crawling, also had a fireball of her desire.
