Even though it's the last train, there are female students? That's rare. Is it a club activity or cram school? A man keeps glancing and notices that she is flashing her panties. He can't take his eyes off her, and their gazes meet, creating an awkward atmosphere. He thinks 'I'm screwed...' But for some reason, the female student smiles and shows him her underwear. She pulls down her panties to expose her genitals or masturbates, and it escalates further…
