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Vanity

Summary:

Lev 18:9 The nakedness of thy sister, the daughter of thy father, or daughter of thy mother, whether she be born at home, or born abroad, even their nakedness thou shalt not uncover.

OR

My XXS Step Sister Wants To Stay A Virgin!

Notes:

(See the end of the work for notes.)

Work Text:

Edelgard never let him in her room. When they had been children, just starting to get to know one another after their parent's wedding, they had shared many things together. Play in each other's rooms with each other's toys. Obviously, those things had stopped when they had been nearing puberty and now there was a larger divide between them than ever. 

 

Except for today. She had told him to come into her bedroom on some Saturday morning. They had been badgered into doing some shopping together by her mother and with Dimitri's recent injury Edelgard would have to drive them around, so she had reluctantly agreed to run errands with him. 

 

Dimitri had already gotten ready for the day, always up early (no matter how much sleep he'd lost the night before,) and especially now he was struggling to do things with the dressing over his right eye ruining his depth perception. The doctors weren't sure if he would fully recover any sight in it, but for now he was to keep it clean and bandaged. Edelgard had been helping him out with more things than ever. 

 

So he had come into her room and she'd closed the door behind herself. The lace curtains were darker, her white carousel canopy bed from long ago had been replaced by real wood and red bed sheets. He could see her worn old teddy bear peeking from behind one of her many pillows, a sign that the days of their childhood were not so long ago. 

 

"Sit at the vanity, I'm nearly ready to go." She pointed out the cushioned bench seat in front of her white vanity and mirror. 

 

Dimitri shrugged, doing as he was told without any fuss even if everything about being in her room was strange and new. It almost felt forbidden. He sat down with his legs spread wide, like usual. Edelgard took the advantage to sit down in the space between to still be able to use her mirror, paying him no mind as she reached for her hair brush.

 

This day was weirder than Dimitri could have ever expected. 

 

"El," he sighed out, keeping his hands strictly on his knees when she'd moved so close to him. She was wearing a skirt with her leggings and a chunky sweater over her blouse with embroidered white flowers on the sleeve cuffs, which she'd turned up overtop of the sweater's. She just shrugged at him, brushing her long brown hair down around her shoulders. 

 

"Don't be impatient," she said, starting to part it at the middle. Her ass pressed back into him when she leaned forward closer to the mirror. Dimitri stared down at the sight between his legs, swallowing and trying to keep from… Edelgard never told him what she wanted. He glances up at her reflection in the mirror, and she's not paying attention to him at all, picking the color of her ribbons in a drawer. 

 

For some reason, that makes his dick get hard faster. 

 

When Edelgard's hair was tied with her ribbons in her usual style, she took out her powder (translucent, she barely needed any,) and started to press it onto her cheeks. Dimitri felt kind of fascinated suddenly-- he hadn't even known Edelgard wore makeup, silly as it sounded. His thighs tensed on either side of her as he watched his step sister. 

 

Edelgard herself focused on her makeup (pressing powder, the tiniest hint of blush on the apples of her cheeks and the center of her lips, and the barest hint of mascara on her eyelashes,) but every so often she would wiggle back against him, use a motion of reaching for something as an excuse to rub into the hardening tent in his pants. 

 

She always surprised him like this. Her skirt was bunching up from the movement between them, he could just barely see the tops of her stockings. Edelgard was dabbing at the middle of her lower lip with her finger. Dimitri's mouth felt dry. She wiggled again and he finally moved his hands to her hips, to stop her. 

 

"Don't," he says, much too late. 

 

Edelgard finally looks at him in the mirror, mouth pulling into a frown. She arches her hips in his grip, and uncrosses her ankles from under the bench to put one of her feet behind his. Her stockinged foot pressed under the end of his trousers and against his ankle over his own sock. He always wore such nice dress shoes and clothes. 

 

"Did you say something, Dimitri?"

 

He frowned back at her, but he didn't let go of her. Her skirt bunched up In his fingers. He could feel her silk stockings under his fingertips. His cock was straining against the zipper of his pants. Edelgard wiped her hands clean with a makeup wipe, then started putting her things away back into her vanity. She flicked her long hair back over her shoulders in response to him pushing her hips with his big hands. 

 

Her hair smelled really good. Dimitri curled his fingers tighter over her. He'd gotten so big she could feel his thumbs rubbing the curve of her ass. She put her hands on his thick wrists when she had put her last makeup case away. Edelgard sighed. 

 

"Well," she stood up in front of him, "are you ready to go?"

 

" Edelgard ." 

 

Dimitri stood up after her so quickly it knocked the bench over behind them and it fell with a muffled thud onto her plush carpet. She could feel his cock pressing against her underwear through his trousers, the back of her skirt caught on his belt when he stood and pulled up over her ass. Her face turned pinker at once, her lips parting to say something indignant. 

 

He didn't let her get that far, taking one of his hands off of her hips to grab around her slender jaw. He could nearly cup her ear to ear in his huge hand. Dimitri turned her head up and around to kiss her deep on the mouth. He could smell the powder on her lips. She twisted in his grip, unable to get away when he had such a good hold on her. He'd gotten too strong. 

 

Dimitri licked into her mouth, as his other hand pressed up under her skirt, fingers sliding under the seat of her panties. Edelgard sighed into his mouth, feeling a surge of excitement when he took charge of the situation. She reached back to undo the buckle of his belt. Soon she had his trousers open at the front, fingers pushing and pulling at fabric until his cock was free. 

 

No matter how she wiggled, Dimitri wouldn’t let her free of the kiss. Edelgard let out little panting breaths as Dimitri smudged all of her makeup off of her lips, like he was trying to devour it. She wrapped both hands around his cock where she could reach behind her, sliding her soft smooth hands up and down the length of him eagerly. She was starting to feel light headed. Dimitri only relented when he needed to gasp for air. He huffed in breath above her head, finally letting her free of his hand around her jaw to rub the drool from his chin and mouth. In the mirror, the red stain of her blush smeared from the corner of his lip to his jawline. 

 

El ,” she’s teasing the head of him now, sliding her fingernail over the tip while her other hand cups around his shaft. He puts both hands on the edge of her vanity to either side of her, finally giving her the chance to move around. She shoves Dimitri’s trousers down further on his thighs, for ease of access, then pushes her ass back against him. 

 

“What do you even want me to do about it?” Edelgard says, like she’s not wrapping her thighs around his cock. He can feel her smooth skin and the silk of her panties, the tops of her stockings. He’s the one who rocks his hips forward, before she can even get him a little wet to slide between her thighs. “ Dimitri .” Her own red, ruined mouth is shiny with saliva too. She doesn’t spit, licks her fingers like a lady, then reaches to grip his cock again, get him slick. He can’t take his eye off her the whole time. One arm curls around her front as he starts to rock his hips between her legs. Edelgard sighs out in pleasure, at the feeling of his cock rubbing right against her pussy. 

 

She wonders if he can feel how wet she is through her underwear. 

 

Edelgard never tells him what she’s thinking. She would do things like this without any kind of warning. Like when she would kiss him outside of class when the hallways were just emptying. Or when she would put her mouth around him behind the athletics building and he had to bite into his hand to keep from making any noise. At least, this time, they’re at home. Edelgard’s mother is downstairs but she seldom comes up to their bedrooms. It’s incredible that, for once, they have privacy. Her grabs under her breast, feeling the wire of her bra through her sweater, and ruts harder between her thighs. 

 

He’s such a simple man. She really could make him do anything she wanted. 

 

“Dimitri,” she’s let her head fall back onto his shoulder, letting him hold her up, only focused on keeping her legs tight enough together to let him fuck between them. She wiggles in his grip, but only to try and push her panties down her legs. He gets the idea after a moment, coming back to reality when the friction went away, and moves one hand to try and help. “ Don’t rip them,” Edelgard warns and between the two of them they’re down around her ankles, unharmed. She doesn’t want him to ruin them more than he already has, and… Well, she wanted to feel him bare against her. 

 

Dimitri moans against her hair when her legs wrap around him again, feeling the slick heat of her pussy pressing hot against him. It was too much to think about pushing his cock inside her, ravaging her, so he stilled himself for a few moments to breathe. Then he grabbed her by the arms and pushed her down against the top of her vanity. A bottle of something wobbled and rolled off at the motion, falling to the floor with a small thub. She yells at him at once but Dimitri is suddenly focused on the view in front of him. 

 

Edelgard is so pretty and pale. He pushes one hand into the soft plush of her ass to spread her a bit wider and inhaled sharply at the sight of her. Soft brown hairs trimmed short, and slick pink inside. He pulled her back by the hip and thrust his cock between her thighs again. This time her wet pussy kept the motion easy and fast and pushed over like she was it ground his cock even stronger into the nub of her clit. Dimitri groaned as he watched her little asshole twitch, and picked up the pace. 

 

It was too easy to get Dimitri aroused and touching her. Fucking her, almost. She can feel the sweat on his hands as he grabs at her, he’s such a mess. He’s nearly lifting her off the floor, she’ll kill him if he breaks her vanity, he’s rubbing her pussy just right. She reaches back to grab onto his shirt sleeve near his elbow, needing to hold onto him, hold onto something as he used her relentlessly. She would have bruises on her ass. She loves being able to melt away when he finally got the idea. When he stopped talking

 

That was, until he babbled. His thrusts became more erratic the closer he got, thrusting hard and fast against her pussy, his huge hands holding her tight in place. He was always the loud one, moaning above her as his cock throbbed against her clit, panting and keening, making too much noise. If they were in public she would have pinched him but in the privacy of her bedroom she just lets herself relax into her orgasm when it finally becomes too much and she thrummed in pleasure head to toe. He was fucking her like a toy, as she shivered and shook, unable to stop him from overstimulating her clit now, her thighs clenched tight together as her insides twisted in too much pleasure. 

 

El , El, I’m– El …” 

 

He says her name like a prayer. He thrusts once between her legs, one more time as he starts to come and she feels it splash her thighs and her wet, swollen cunt. The head of his cock brushes the opening of her and she gasps, before sliding up over her ass instead and Dimitri came between the press of her soft cheeks right against her hole. It was a way to keep it from getting on her skirt, at least. Dimitri gasped for breath as his movements slowed to a stop and he looked down at the mess he’d made of her. 

 

“Guess I should’ve said something,” he said, his voice dry. 

 

“Don’t talk about it,” she was already grabbing tissues out of her vanity drawer, handing the little pink purse packet back to him, still red in the face, glaring at him in the mirror. She let him clean her up before giving herself a once over with a makeup wipe and tossed it in the bin with the tissues. She pulled her panties up her thighs again and then turned to him, tucking his cock back into his trousers and pulling his belt tight. Then she nudged him away like nothing had happened at all, taking a clean makeup wipe to her mouth and carefully cleaning up the mess he’d made. “Lean down.” 

 

Dimitri leaned to let her scrub his face clean with the wipe too, finding every little smudge she might have left on his neck and ears and all around his mouth. Then she pushed her fingers to the top of his eye bandage and pressed it tighter to his skin where the sweat had started to make it come off. Looking after him in her own strange way. He sighed out as she pushed more of his hair down over his face experimentally, before shoving his fringe back up into place. 

 

“Hide the trash. I’ll be right down.” She took out her powder again to redo the makeup around her mouth and her lips, leaving him to tie up the little bin bag and he stooped to do so, narrowly missing cracking his skull against the corner of her dresser. “I'll have to buy more wipes, Dimitri.”

 

“Sorry,” he said. She kissed him one more time, and he left her to hide the trash under the bags in the garage. 

 

His clothes still smelled like her room, the scent of her makeup lingered on his skin. He started the car and turned on the heat. 

Notes:

Hi thank you for reading! I want to do lots of scenes with this au, maybe. Like a stream of consciousness type deal. Dimitri is just hotter to me with eye trauma sorry.

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