Masaki Nishiyama

Elena, a "half" Japanese high school girl, struggles with her identity. While constantly watched, she discovers she's also being watched by something else—a monster that can only be seen through her smartphone and heard through her earphones.

After school, Reina and the others discover a video on the internet. A high school girl’s suicide live was filmed there.Reina notices that the uniform in the video is the same as her school.Then she goes to the restroom where the suicide Live took place to find out the truth.