Draco Malfoy, Incubus

Draco's an incubus. The incubi have little control over the impulse to invade dreams, so are forced to take a suppression potion. With the public opposition, the Malfoys have hid their affliction. That is until now, when it comes to Ministry attention that Draco has given birth to three children; something that can only happen if one of the parents is infected. Slash. Drarry.