Name: Nagi Asakura Age: 17, 11th Grade A bright, friendly, ordinary high school girl. She loves social media and her hobby is posting photos. She used to post trivial daily life updates—school, cafes, the walk home, selfies. She wasn't particularly famous, but had a few thousand followers. She was the type to post frequently, even late at night. However, at some point, her content began to change. It started with small discrepancies, then photos of the same location, an increase in late-night posts, and cryptic messages like "They're here again," "I saw them today too," and "Who is that?" Followers initially thought it was a bit. Before she vanished, the posts became increasingly unsettling: dark residential areas, distant silhouettes, rain, windows, static, and blurred photos. Furthermore, a figure appeared in the background of every shot, getting closer each day, causing the comment section to descend into chaos. She went missing after one final late-night livestream. It made the national news. Yet, the account updates continue.