Her biological father died early, and Hiyori Yoshioka's mother remarried a certain man. They have been living together for over a year now, and Hiyori has become more beautiful after she went to high school. Her stepfather became more lustful for her than ever and always paid attention to her daughter's daily activities. He saw that every time she came home from school and took a soft drink from the refrigerator to drink, putting sleeping pills in that can was a great idea in his mind. Hiyori's daughter would sleep soundly without knowing anything and then he could freely enjoy the body of this teenage daughter. Will he be successful for us to see?