XRW-530 Miho Sakasaki is sexually trained by her mother's inner father to protect her life, turning into an onaho

Miho Sakasaki plays a girl who is sexually trained by her mother's inner father to protect her and her life. Initially hating the perverted plays forced on her to avoid making her mother sad, she eventually accepts them. After experiencing intense climaxes her immature body had never known, she falls into pleasure and becomes an exclusive onaho for a vulgar uncle.