I suspect that I am an NPC in a strange game.
I prepared for the final exam day after day, but the exam never came.
New students come every day, but they all leave before the third day.
There is always a person wearing a strange mask sitting at my desk, but no one seems to be able to see him/her.
One day the man spoke and He asked me to leave.
Why should I leave? !
Concept: Girls are self-reliant and find themselves in a dark and terrifying game.