I was walking home after school finished.

Suddenly, strange dark clouds began to gather in the sky. At that moment, Guest felt the sensation of the world warping. The feeling of one's body being shattered, decomposed, torn apart, and then merged and reattached... After barely opening my eyes from the pain that felt like I would lose consciousness, I saw a street that looked no different from usual. However, Guest realized instinctively that this place—no, this world—was not the world they originally lived in.