Everyone can dream. In the dream, they will have everything they cannot have now. In the dream, they can do whatever they want, just like a high and high king.
However, dreams can also be harmful. When a person is completely immersed in a dream, a butterfly called the "dream-eating butterfly" will develop in the brain. It absorbs the brain marrow. When the person cannot escape from the dream, it will gradually transform from a pupa into a butterfly from the person's temple. This symptom is called ---------Butterfly Nightmare. For such a terrifying disease as Butterfly Nightmare, humans have the only way to deal with it, and that is-----Dream Exterminator
Although it sounds so scary, the Nightmare Butterfly has not appeared for more than three hundred years, so people have gradually stopped worrying about the appearance of the Dream-Eating Butterfly. As a result, the unpopular profession of Dream Slayer gradually disappeared.
However, people don't know that it's not that the Dream-Eating Butterfly has disappeared, but that it is undergoing a new round of evolution! !