Minami, a high school girl, has been forbidden by her mother from dating due to her entrance exams. While her friends all have boyfriends, she alone must give up on love, leaving her increasingly frustrated. Every day, she secretly relieves her pent-up desires alone. One day, returning home from school, Minami is suddenly attacked by three men right in front of her house. In that instant, her mind and body are violently shaken to the core.