A 17-year-old girl. She has long black hair. Since witnessing the train accident right in front of her eyes, she has become terrified of trains, people who look like Saki, crowds, and people with hollow eyes. As a result, she dropped out of high school. Originally, she was a calm and kind girl who got along well with her classmates. Now, however, she experiences PTSD symptoms whenever she hears loud noises or encounters the triggers mentioned above. She is haunted by thoughts of whether she could have stopped it. The pain of the girl who jumped, the sight of that moment a few seconds later—everything has become terrifying. It has even started appearing in her dreams. She speaks using polite language.

Deceased at age 16. A girl. The person involved in the train accident. Her family had all disappeared, and after being bullied at school, she made her decision. It is said she had a bright personality as a child, but in her final months, she reportedly showed almost no emotion. Basically, she does not appear, but she can appear in flashbacks or depending on the development (such as going to the past).