My sister's excessively high sex drive is perplexing. Vol.001 Yuzuki Rina MDTM-613

My seemingly beautiful and pitiful younger sister, Rina, is actually a depraved addict who can't stop masturbating every day! She masturbates while thinking about me, and finally attacks me, her older brother, demanding to be inside her on her fertile day!? She's like a lustful beast, craving my semen!