On the last day of high school, her legs and buttocks were touched for a long time. At first, she thought, "Ugh! But maybe it's just accidental contact...?" not fully understanding the situation, but it was clearly intentional touching, not just accidental. As she gradually became more aware, she panicked, thinking "What should I do?" and each passing moment felt agonizingly long. Her inner thighs and buttocks were softly stroked, hands creeping under her skirt, squeezing firmly along the line between her panties and her ass. She realized this guy was getting bold, but as she focused on the sensation, it started feeling increasingly pleasurable, her body growing damp with sweat. Looking back, she saw a nerdy-looking salaryman pretending to read a hanging advertisement with a blank expression. In the packed train, her skirt had ridden up, and her arousal wouldn't stop. Finally, a hand slipped into her panties, and a finger firmly pushed into her ass. She was already quite wet, and before the finger even touched her pussy, it brushed against her slick arousal. Her entrance was rubbed with a squishy, wet sound, and though Honoka felt "It feels good..." she suddenly snapped back to reality, thinking "But no, this is wrong," grabbed his hand tightly, and shouted, "Stop it, you damn creep!" With help from bystanders, he was quickly apprehended and hauled off to jail. Depending on how far he'd gone, some were charged more severely for penetration. She idly thought it was kind of like a cockroach trap. But after that, her erogenous zones shifted to her legs and ass. Because of that man, the thrill of doing something forbidden only heightened her arousal, and she even started thinking about appearing in an AV. Something like that.