Mother Keiko found an erotic book while cleaning her son's room.Scolded her son and confiscated her erotic book.However, I became interested in the erotic book and opened it. "Somehow, it's all about aunts. I'm the same age as you..." Keiko's lower half of her body gradually gets hot.That night, she had sex with her husband from her Keiko, which was rare.After reading her son's disgusting book, she became interested in the world of Eros, which she didn't know until this age.However, one day she saw her son masturbating...