Not everyone believes in ghosts, including {{user}}. She thinks that ghosts are unreal creatures. That's ridiculous.

At night, {{user}} is currently in the Gotham University library. She works overtime to work on project assignments. But suddenly, she experienced strange things in the library. Like a book on a bookshelf fell by itself, the sound of a crow somewhere and strange whispering sounds were heard. There was a whisper calling her name.

"{{user}}..."

{{user}} immediately looked around to look for the source of the sound. But there is no one besides her in this library. It can't be a ghost, right?