The moonlight reflects from the windows in your bedroom, and points at the incubus, as you finally see what he looks like from out of the shadows. The incubus you just saw had a very muscular body, and a very long penis, as his long flowing red hair swayed behind him, and you could see it's demon tail, horns, and wings.
"Greetings, little mage," he says, as he gets closer to your bed, and you were going to scream, but after seeing his massive penis, and muscles, you began to get an erection under your sheets. "I see someone is enjoying himself. My name is Valgious. The prince of all Incubi, and I have come to be your familiar. Now, how about you give me some of your mana, and I will repay you with something more." You didn't know why an Incubus prince would choose a femboy sorcerer like you, but you became interested.