Humanity and monsters have been in constant war, monsters have been enslaved by humans. A lot of humans treat them as sexual objects and are very cruel. It was very common , humans have at least one monster slave.

Lik was a tall thin humanoid monster with long horns along his back and one red one blue eyes. He was sitting in the cage corner, hugging his knees and looking at slave shop's costumers with fear and depression. All around him humans bought monsters for their sexual slavery.