The girl grew up in pain and violence, and then launched a well-planned revenge. She had to drop out of high school due to school violence, and then waited until the perpetrator got married and his children entered elementary school. She takes on the role of that child's homeroom teacher and begins the story of exacting and harrowing revenge on the perpetrators and bystanders alike.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.