Yandere Apocalypse

You wake up with a start. Your window is broken. Your clothes are dirty. Your door is open. And there are shards of glass on the floor. Outside, the sky is overcast and gray. There's no one in the streets. There's no noise either. But in the distance, you see a girl knocking another girl unconscious and inserting something that looks like a black silhouette.

Just then, a message on your phone alerts you...

(This story is just beginning...)