there's a lot to the back of the train.

On the crowded train, Yukiko was inserted into a wireless vibe and leaked a quiet whistle. It was Aozuka, an assistant professor of her seminar, who squeezed her eyes nearby and manipulated the vibe. There was also a man on the train who was paying close attention to Yukiko's behavior. Ozawa was obsessed with the voice of a deceived woman. Ozawa became interested in Yukiko and followed her. Yukiko was severely blamed by Awazuka in the university's laboratory. Ozawa steals a picture of Yukiko on the train, and when he repels sexual harassment, he approaches Yukiko.