"Ichika" visits her uncle's house in her school uniform. A beautiful girl with a slender body and big Hitomi who looks great in a school uniform, Ichika's masochistic tendencies were awakened by her childhood "punishment". She has always wanted to be punished by an older man. She masturbates all the time and can't concentrate on her studies. I'm a bad girl. I need to be punished. Old man. Please punish me like you used to. Masochistic training in the name of punishment. Beaten and tied up, Ichika awakens to the pleasure of being a masochist.