GAID-025 Incest "Grandpa, Stop It... This Is Funny" Rio Natsukuri

"Rio-chan" lives with her parents and grandfather. She has a problem that she can't tell anyone. It's a relationship with her grandfather that only takes place when her parents are away... She takes a bath together and touches her body, and she is made to serve in a futon... Her immature body is played with. She is frightened by her grandfather's sudden change and cannot talk to anyone. Help me...mother...