GVG-067 Once the niece grew into an adult, her uncle and his son couldn't help but get fully erect

My uncle, who came home with his son, took a bath with his niece that night and was surprised at how much he had grown. His bulging chest and pubic hair growing between his crotch... Ever since seeing that body, my uncle has been sexually aroused by his niece, and finally visits him at night and attacks him. After that, his son also started playing tricks on her niece, and the father and son started to play with her niece.