My sister seems to have been masturbating since she saw her uncle's erotic book when she was little ... Without being taught by anyone, while naturally and unconsciously tinkering with her fingers, she remembered the pleasure of masturbation and the nipples. After that, I bought an erotic book with a convenient lie when my dad asked me, and indulged in masturbation ... And as my chest got bigger, I felt the pleasure of my nipples, and like Kuri, I started to get sick with my nipples. Ta ...