The teacher wakes up and realizes that he is the switch demon. He searches the desk and finds the note that was stolen from the teacher's desk. He tells the teacher to go to the school and search the desks. The teacher finds a plaster statue of her daughter, and the teacher tells the girl to open the statue. The girl is shocked and asks why the plaster statue is there. She realizes that the statue is made by the teacher because she is the "switch demon." The teacher tells her to go back to her seat and wait for three more people to come and open the statues. She tells her that she has put a bomb under the desks and that if she wants to live, then she should sit down. She says that the people who bullied her are the ones who deserve to be buried together. She is the one who deserves to die. She explains that she abandoned her own child, but every time mumu appeared in front of her, her heart felt like it was pierced with a "sharp knife." She says she hopes to be a teacher and take care of all the students, but she can't because she knows that her daughter is a devil in her heart. She calls the demon "the switch demon" and says that when mumu fell from the roof, she was completely awake. She decides to return to the town where she was born and apologizes to everyone who has hurt her.