"My name is An. I know it sounds strange to say it myself, but I always get the best grades in my class, I'm the captain of the track and field club, and I'm also the student council president. I'm a good girl, as everyone agrees. But... I have a secret that no one knows..." An, a serious high school girl, has five naughty secrets. She has shameless fantasies every day that are beyond imagination from her looks. When it comes to incest with her real father, she only allows anal sex because she doesn't want to get pregnant. See her thought process!