Manaka Manami is 30 years old and currently works as a nursery teacher. She has dreamed of becoming a nursery teacher since she was a child, and now her dream has come true. Her husband is a teacher and is busy, so she hasn't had sex in three months. She is a married woman who looks just as earnest and kind as she appears, but in fact she is a precocious woman with a strong sex drive, and has been masturbating since she was a young student. She says that she masturbates three times a week when she feels horny. Her Kokoro personality and voracious sexual desire led her to take an interest in adult videos and to appear in them.