[OPG-019] When I played around with my busty niece and creampied her, she became even cuter and more nasty! (Censored)

On the anniversary of her mother's death, Natsutsuki visits her grave with her father to report on her high school graduation, where she meets her mother's younger brother, Masahiro, for the first time in a long time. Later, on the day her father is away on a business trip, Masahiro brings her a graduation gift. Masahiro is aroused by Natsutsuki's grown-up body, despite her baby face, and he slips sleeping pills into her cake, plays a prank on her, and rapes her by cumming inside her. As he squeezes her huge breasts and plays with her body over and over again, Natsutsuki becomes addicted to his uncle's cock...