Ichika, who is about to take university entrance exams, has a neat and serious personality. She always studies on the train to school every day. Unbeknownst to Ichika, she became a rumor among strangers. Ichika's images and videos were uploaded without permission on a dark site called "Beauty Excavation Bulletin Board". On a crowded train while going to school, a man she doesn't know at all shows her a video of Ichika, and she can't make a sound and gets caught in a molester's poisonous fangs.
