@ Sonadowfans12, I don't think that it's weird that boy is like yaoi ^^ So don't worry :3 I have friend who also guy and he loves yaoi ^q^
And about story... maybe you can write something like Werehog!Sonic x Vampire!Shadow. something like when they both were children they lost their parents (or idk... fathers) in the fight and two kingdoms started war because of this. then Sonic and Shadow are grow up and fall in love with each other. xD I know this is stupid idea.
or maybe something with college au. or with school au. or even incest (⁄ ⁄•⁄ω⁄•⁄ ⁄)
But that's only my ideas. and I know that they're stupid ;-;