Bloody School Rules: My Deskmate Told Me Not to Write on the Desk

[No system]+[Rules and strange stories]+[Inference]+[Supernatural] On the first day of school, Zhou Zebin carved his initials on the corner of his desk. My deskmate Gu Zixuan suddenly grabbed my hand "Wipe it off quickly! Students on duty will see it!" "What happened to the student on duty?" Her face turned pale: "They are not human beings, they are 'cleaners'." "Those who break the rules will..." Under the restrictions of the rules, they unexpectedly discovered...