First solo trip. memories of the winter vacation with my relative's uncle, hatsune fumika?

Every time I visit the countryside with my family, "Fumika" said that she would marry her uncle and had been jealous of her uncle since she was a child. Although he thought that his uncle was a child, he greedily felt the appearance of an old man growing up every time he met him and repeatedly played bad things in secret to his parents. Fumika accepts and grows her uncle's happy figure. When he was allowed to go to the country by himself, he went to his uncle's house with excitement about his actions with his uncle who was not disturbed by anyone.