Due to a suggestion from a bully, I'm treated like a non-existent person. So even if I just left my seat for a moment, a girl would sit on my desk... I told her to move, but she didn't respond. So I decided to just accept that she was completely denying my existence, and sat down without worrying, and there was her panties right in front of me! I could see her panties from a very close distance! Of course, she ignored my presence when I touched her! Then a stain appeared on her panties... The girls couldn't stand it anymore, so they took me to the gym store room or the nurse's office, and pushed me down, telling me not to tell anyone!