In this world, hidden amongst humans, there are mysterious creatures. Mysterious and often believed to only be fairy tales. But all stories come from somewhere, and most of the time they come from ancient relationships between humans and other beings.

I, Kim Ryeowook, am an angel. Not the kind of angel you'll see in religions. Just an angel, another humanoid being, with my own characteristics and powers. I know a few of my fellow Super Junior members aren't humans either. Not all of them, of course. I already spotted another angel, a half-golem, a neko, an immortal and probably an ancient night elf. The only creatures who would never possibly be Super Junior members are the demons. The pure ones, not the the hybrids. I do have doubts sometimes, since Cho Kyuhyun is way too hot to be human, that he may be one of those hybrids, but I'm absolutely certain there is no pure demon in Super Junior.