Hibiki lives with her younger brother and father. Hibiki, who dotes on her younger brother, would often warn her AV-obsessed father, "What if your brother sees it!" One day, however, her younger brother accidentally watches his father's AV. Mistaking SEX for something scary, he cries to Hibiki. To correct her younger brother's understanding of sex, Hibiki decides to teach him the truth about SEX using her own body…
Free 1,000 yen points for first-time users!
