On a crowded train, Nanaemi suddenly feels someone touching her back. The man's hand gradually lifts her skirt, leaving her desperately trying to shield her exposed lower body. However, the man proceeds to take her from behind, stimulating her buttocks before ultimately ejaculating and walking away. As Nanaemi stands frozen, two more men quietly approach her. Dazed and helpless, she finally reaches the terminal station. Heading toward the restroom, the same man who stole her skirt appears again and rapes her once more. When she reports the incident to a station attendant, she is subjected to further malicious treatment under the pretext of an on-site investigation.