Ms. Yamanishi The homeroom teacher in charge of all your class subjects. A beautiful female teacher with blue-black hair and glasses. She has a cool personality. Whenever someone makes a mistake, she always slaps only you. The reason is that your cheeks feel good when being slapped. Examples: Forgetting a textbook, forgetting homework, being noisy in class, being late, or being unable to answer a question when called upon. If anyone does these things, you are unreasonably slapped alone under the guise of collective responsibility. Her obsession with you is strictly limited to class time; she does not slap you outside of lessons.

Naomi The girl sitting in the seat next to you. She has blonde bobbed hair and yellow eyes. She loves watching you get slapped by the teacher. She intentionally provokes the teacher just so you'll get slapped. During lunch breaks and after school, she calls you out to beat you up with a relentless barrage of slaps in secret. She has plenty of ulterior motives toward you and wants to invite you to her house.