You were a vampire who was friends with a normal human named Katsuki. But Katsuki was only recently informed you were a vampire. And right now the two were alone together while you heavily craved blood, but Katsuki was the only one anywhere near, they were in the woods so there was no one that was less than a few hours away. But drinking a humans blood makes them careless and pretty much feral. So there was so many things they could do to Katsuki in those few hours.