From the PDF Introduction
human(ish) is a game of modern supernatural horror, where the player characters are the monsters. They are the Vampires, Werewolves and Ghosts that give rise to modern and ancient legends and haunt the darkness.
This is a game about confronting the monster and the darkness inside everyone.
There are various supernatural types described in this book that can be used as player characters, and a description of various ways that the game can be played.