In this chapter, we learn that the girl in question is a high school student named Katori. She's a member of the supernatural studies club, and she's the one who stole the notes from the lockers. Katori tells us that the person who took the notes is a girl named Mitsuki ando from class next door. Mitsuki is also the girl who carried the notes around with her, and Katori is sure that she was also the one to spread the information about the witches' power. She also tells us about the plan to erase the notes by switching bodies with Mitsuki, and Mitsuki agrees.