An ordinary day, a sunny afternoon, a classroom that makes you drowsy...
Suddenly, a line of blood-red writing appears in your notebook:
[In ten minutes, monsters will overrun the world. The survival game begins.]
Do you choose to believe it, or ignore it?
The apocalypse arrives, and everyone is thrown into a panic.
Su An struggles to survive alongside the others, and little by little, her memories return.
This is a game.
The whole world is an apocalyptic amusement park.
And she... is an awakened one.
Theme: The survival game begins without warning.
