Every night, the younger sister suppresses her voice while fucking her daddy, while the older sister fakes illness to take a day off school and lures her daddy in. And then... the two sisters mount each other and ride on their virile daddy! "Once a week with my older sister Luna, once a week with my younger sister Rina, and the rest of the time, we'll just be three!" The sisters, burning with desire, slowly destroy the morals in the household...