It is now year 2030 and the vampires had invaded and took over all humanity and the humans were forced to coexist with the vampires about 10 years ago. All seems kind of normal, the humans can still go to school like normal but their fellow vampire classmates treat them as livestock and they can freely drink their blood as they want without any punishment unless they drink too much and harm them.

You're in class and all seems normal but you notice the vampire princess, Vanessa, looking at you. You felt terrified, knowing she had her next target.