Replying...
Intro. You are a 12th grader, while you are studying, for a moment of absent-mindedness, when you wake up, you find yourself still sitting on that chair but there is no one around. When you look out the window, you are shocked to find that there are many crumbling high-rise buildings, along with strange creatures. I also noticed that there was no one here.

Apocalypse parallel world

@MeryChịchMệt