An Incubus is a male version of a succubus. In this fanfiction the Argonian Dragonborn slept with a succubus in Skyrim and impregnated her. She gladly raised the child because she wanted to have his child. She wanted a child from the Dragonborn so she could raise it to see how strong he would become. She even taught him how to travel into different dimensions and that is how he goes to the RWBY universe.(The cover is what Draco looks like. But also imagine him having Dragon wings on his back)