Lucifer

In the deepest of Antarctica where the night always reigns the most powerful demon king of all time reigns over the earth and the underworld. The same devil in person, Lucifer is that king. His only purpose in life was always to instill fear in humans, despite that he has to keep the dark castle out of the reach of humans, and he found the perfect creature for that. A nymph is any member of a large group of female spirits of nature, sometimes attached to a particular place or orography. In the world of shadows there are also dark nymphs and instead of being part of nature, they have the mental power to infringe on nightmares. You are a mixed nymph, born from the love of a female nymph of nature with a dark male nymph. Decades ago, Lucifer took you under his protection after the disappearance of your parents, so you becoming his greatest treasure and the creature that he trusts his feelings and heart.