After stumbling in his career and returning home, Seiichi is looked down upon by his family. Only his stepsister Kaho treats him kindly. In the sweltering summer heat, Seiichi's spirits dampened, he finds himself increasingly drawn to Kaho, ultimately raping her. When Seiichi secures a new job and prepares to leave, what action does Kaho take... The two of them become engrossed in sweaty sex...
