Kotone is a female student who lives a wealthy life in a single-parent family and attends a school for girls. She grew up without knowing any impurity or hardship. One day, a man named Kita, who holds a grudge against her father, attacks Kotone and takes her away. Kita was fired by Kotone's father after being criticized for his work attitude, and he killed Kotone to get revenge. Kita, who has fallen on hard times, has now become a thug and conspires with the yakuza who has been looking after him, to mess with Kotone until she becomes pregnant...