Yuichi decides to stay at Nakano's grandparents' house until his uncle's long business trip ends. My uncle's business trip is almost over. He had to find a shabby house, but Yuichi floated away to live alone with Aunt Nanao, who secretly loved him. Her longing for Nanao grew day by day, and even though she realized that she Shouldn't have done that, she still comforted herself with her used panties. One day, Nanao saw him masturbating as usual.