Here's that request Gavinguico
You were currently smiling to yourself, sitting in the courtyard of Beacon in the dead of night while listening to the peaceful sounds of the night. However, that smile quickly became a frown as you started reflecting on what it was you actually were. You slightly despised yourself for the simple fact that you were born a demon. Your very existence would terrify everyone you knew, and it was for this simple reason that you had avoid romance like the plague. You admired Weiss Schnee above all the girls in school, and were actually interested, but considering her disposition towards Faunus you assumed it couldn't be much better for you, so you chose to bottle it up.
Shaking your head, you look back up into the sky and admire the stars, letting your horns and tail out. The pointed appendage twitched as it was freed, while the familiar weight on your head finally made you feel comfortable. Unfortunately, footsteps reached your ears, the clacking of heels making your face whiten. Your wings spread and you launched into the air, above whoever it was walking this late at night. They kept flapping in the breeze as you eyed the white haired girl below. She sat down, exactly where you did, and looked up just like you. Your eyes wide as her eyes lock on to you, forcing you to finally land. You stood just ahead of her silently, unsure as to what her reaction would be.
Weiss: Is that you, Y/N? There's no way...are you a Faunus? Or...or...
Y/N: I'm a demon, Weiss. Now you know. Why'd you have to be here, at this place? At this hour? Why were you out here?
You were looking down, but Weiss' hand reached out and brushed against your tail. You flinched but stayed still, letting her hand roam elsewhere to get a feel on your wings and horns. When she pulls away, you expect a slap, but instead get a pleasant surprise.
Weiss: Would you go to Vale with me for a while? I need to clear my mind, and you might help.
You nod, confused at how she was handling things but glad it was going this way. Knowing there'd be no Bullheads, you grab Weiss by the waist and take off into the skies. To your amusement, she doesn't scream. She only smiles as you soar through the air, a breeze passing through your hair. You pull her closer, being careful not to drop her as you reach the border of Vale. You grin as you spot a favorite place of yours, diving down to land there. Your feet lightly touch the ground and Weiss gets off of you, smiling. You scratch your head as your tail, wings, and horns all shrink away, making you look fairly human. Weiss simply nods before leading you away, walking down the nearly deserted street. She keeps glancing up at where the moon, covered by clouds, should be. You grab her hand and pull her back.
Y/N: Weiss, you can talk to me. You know my secret, so what's bothering you? The fact I hid it?
Weiss: No its...well, its probably better to just show you instead.
The clouds drift from in front of the moon slowly, the light crawling closer and closer to her. When it covers her, her typical dress fades, replaced with a far more skimpy outfit. Bat-like wings stretch out, and a tail with the shape of a heart pokes out from behind her.
Weiss: It just kinda happens...The moonlight happens and I can't not transform. I was outside so I wasn't found out... I was just scared.
Y/N: So you're a succubus. So what? What do you have to be scared of?
Weiss looks up at you, shocked at how casually you were treating the situation. You step closer, looking down at her as you smile.
Y/N: I'm a demon. I can't judge. Besides, you're still you, right? The perfect Weiss Schnee. Just makes you a bit more of a catch, for whoever's lucky enough to have you.
Weiss looks up at you, a small blush evident on her face. She starts shaking slightly so you look closer at her, concerned for her well being. You start feeling her forehead, and she lunges forward. Her lips connect with yours, stunning you for a few seconds. Weiss pulls back, appearing to be on nearly the verge of tears.
Weiss: I'm sorry. I just...I thought...I'm so sorry, I knew you weren't interested but...
You were the one to cut her off with a surprise kiss this time. You pulled her close to your body and continued your make-out session before pulling away. You pant slightly and grin.
Y/N: Shut up. You just surprised me. I'd love to keep a succubus like you by my side.
You grin as your eyes seem to glow an infernal red before standing in utter shock, gazing into Weiss' eyes. They were now changing shape, right into a heart. She started stepping closer and closer, pushing you back further and further. Your back bumped into a wall and the heiress pinned you there, her tail wrapping around your leg.
Weiss: You wanted a succubus, didn't you? Well then, if you'll have me, you have to deal with everything I give you. What do you say?
Y/N: I'm definitely ready. Back to my dorm?
Weiss: Definitely.