At first, no one believed the eccentrics who claimed that by falling asleep on Earth, they would wake up in another world. But then these eccentrics demonstrated what they had learned in the world of the Flying Islands, and the world was amazed! They could ignite fire above their palm, lift objects with the power of thought, or disappear right before your eyes. The "superheroes" appeared just in time: large horned rats, more resembling canonical devils, were running through the streets; inhuman laughter could be heard from the neighboring apartment; and street cameras captured creatures crawling out of their hiding places at night in search of human flesh. The other world had also started invading ours. My name is Arthur, and I don't resemble a superhero at all. I'm selfish, stubborn, and I certainly don't intend to save people at the cost of my life. Yet today, I too woke up on a flying island...