GAID-025 play "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 my grandfather that only happens when my parents are away... Taking a bath together and touching her body, being served in a futon... Her immature body is being played with. I'm afraid of my grandfather's sudden change and I can't talk to anyone. Help me...mother...