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While he didn’t really care for being sent out of the palace on missions so frequently, less so being sent all the way to Liyue, he had to admit there were silver linings. Mostly in the form of a quiet, golden-haired girl who clung to his guide’s side like glue.
Childe had long since come to terms with his... predilection towards the small and young, mostly opting to simply observe and fantasize than act on any of his urges. It wasn’t exactly easy, but he had a vivid imagination; had to, because he couldn’t risk getting caught. While he was far from the only one in the Fatui with similar tastes, the less blackmail he allowed in others’ hands, the better.
So he kept his looks and his touches as chaste as he could manage whenever he was abroad, holding himself back until he could return to his younger siblings. His sister and brothers, long since trained to welcome his incredibly inappropriate actions as expressions of love, were the only safe ones for his lust. And he revisited each memory he had with them frequently, their sounds and their warmth taking the edge off just a bit. And he needed all the help he could get.
Because the girl, little Lumine who silently demanded to always be held by or to hold onto her guardian, plagued his fantasies and drove him mad with the need to know her. It didn’t help that their first meeting, where she sat so flustered on Zhongli’s lap behind his desk, reminded him so much of how Tonia looked each time she had to keep her noises in as Childe fucked her thoroughly. And as much as he loved his sister, Lumine was just so pretty; the mere idea of how much prettier she’d be filled with his cock had him coming into his fist on a nightly basis.
It was all just wishful thinking, he knew. The girl never left Zhongli’s side for more than a few seconds, there was never a sliver of hope of ever acting on any of the things he wanted to do to her. Of hearing all the sounds he could force from her, seeing the faces she’d make as he trained her to take him to the hilt. Or so he thought.
“I appreciate your assistance greatly, Mr. Childe,” his guide said to him, voice weary as a young lady- who was his boss, as Childe had come to learn- chirped instructions to him. “It should only be a few days. I would usually leave her in the care of a friend outside of the city, but I’m afraid that he’s too far out of the way, and this matter is quite urgent.”
“It’s really no trouble,” he smiled, taking the girl from Zhongli’s arms. She didn’t fuss like he expected her to, but she did have to be coerced to let go of the consultant’s coat by way of pressing a stuffed toy into her hands. “I quite like working with kids, though you can imagine how rare an occasion it is in my line of work.”
“Indeed.” Zhongli glanced away briefly to where the funeral director started calling for him again, before sighing. “It’s best you take her for walks around the city regularly, and try to encourage her to walk on her own at least some of the time. I’ve been trying to break her habit of being spoiled, but... well, you see how successful that’s been.”
Childe kept his smile amiable, free from the sarcasm of his thoughts. Because if Zhongli hadn’t mentioned it, he would never have known the man was trying at all. He caved the moment the girl held up her arms at him, each and every time he had joined them for a tour of the harbor. It was more like the consultant was trained, rather than the girl was spoiled.
But the instructions for her care was nothing spectacular; after all, Childe had been in their company enough times to know what food she liked and how Zhongli settled her tantrums when she was tired or hot. He just needed to keep an eye on her, make sure she stayed safe. That no one with ill-intentions snatched her away.
Like, perhaps, Childe.
It was only a few days, anyways. Hardly enough time to properly train the girl not to be scared of him or what he wanted like he had with his siblings. Perhaps just a few touches and looks here and there, and no one would be the wiser. The last thing Childe was worried about was Lumine telling anyone, though; he was pretty sure he’d heard the girl speak a total of five words in all the time he’d been in the city. And most of them were demands- up, toy, play. Hardly the vocabulary to recount what Childe planned to do.
He didn’t let his haste get the better of him, however. They took a walk through the city, Childe paying a brief visit to the bank to inform Ekaterina that he’d be taking a few days off to play babysitter, Lumine in tow with her silent yet perceptive stare. The stare that occasionally had him wondering what truly went on in the girl’s mind when it was focused on him, feeling for all the world like she was reading a list of his sins to herself.
It was better not to dwell on it, considering the sins he was going to commit on her little body.
After the bank they stopped for lunch, Childe opting for takeout from one of the vendors in the lower market before making their way back to his apartment. The thought of taking her to Zhongli’s home in the terrace looking over the city briefly crossed his mind- along with the idea of molesting sweet little Lumine in their space with the man none the wiser- but quickly decided he preferred the relative solitude of his apartment. Because he had rented the entire floor, despite only occasionally staying in his single unit. An action he took with only the thought of not being bothered by neighbors at the time, now providing him the seclusion he needed in case he did spook her. He found children to be the loudest things in existence when they wanted to be, and from what he knew of her little fits, Lumine was no different.
Her preference for physical contact apparently translated to him in Zhongli’s absence. She sat, still and polite, in his lap as they ate their lunch together, the little girl showing him up with her flawless use of chopsticks while she watched him drop more food than he ate. Each wet plop back onto his plate met with a giggle as she waved her hand in front of them both, as if demonstrating the proper technique for holding the sticks.
Which kept her distracted enough for his free hand to wander, resting on her lower thigh just under her skirt, drawing circles into her skin until she was fidgeting away with more pealing laughter.
“Oh, are you ticklish?” he asked, trailing his fingers further up her skirt. Already pushing his luck, but he didn’t get where he was by playing safe. He would only toy with her through her-
She wasn’t wearing panties. Not especially uncommon for kids as young as her, but that wasn’t what he found surprising. No, what startled him was the solid, round object just inside her hole that had her face flushing and her lips parting when he gently pressed on it.
“Oh, I see,” he murmured, pushing their half-eaten food further up the table. In a single movement, he had her sitting on the edge of it, dress flipped up and cute little legs spread so he could truly see, to convince himself it was real.
A geo construct, heavy and smooth, plugged up her tiny hole. So Zhongli was doing his own training for her, stretching her until she could take a cock. Far be it from him to take another man’s hard work for himself, but as he looked on at how she squeezed around the construct, the more he was dying to sate his curiosity. Just how close was she to taking a full fucking?
“Zhongli’s a naughty man, huh?” he asked, not expecting a reply. The only response he got was a steady increase in her squirming, as if she was on the verge of another tantrum.
His fingers traced the rim of her cunt, pressing her slightly wider as she moaned above him. “I bet you can take a couple fingers, but I’ll have to take your little toy out first…”
Working a finger in around the plug without pushing it out of reach was a challenge he was more than welcome to have, especially with each new sound the girl made as he touched her. He was already achingly hard in his pants- had been for months, if he was perfectly honest with himself- but he was going to savor every moment he had with this girl.
It was only a few days, after all, and he somehow doubted Zhongli would let him watch as the consultant deflowered the girl.
Eventually he had a secure hold on the egg-shaped plug, pulling it slowly out of her for both their sakes. Her because fast movements with such a large plug in her small hole would undoubtedly hurt her, him because he was positively enraptured by the way her cunt stretched around it with ease. It almost looked like she’d be able to take him completely, and if he went by her face, she wanted to take him.
He spent a significant amount of time watching her hole flutter, almost like it was throwing its own tantrum now that it was empty. Entranced with thoughts of stuffing her with his cock despite the claim Zhongli clearly had on her, he didn’t realize she began leaking a suspiciously white colored fluid until it was dripping onto the floor.
“Oh, Zhongli’s a very naughty man, isn’t he?” He looked up to her flushed pink face. “Gave you a nice load of cum before he left to make sure his little girl was happy. Or does he normally plug you up in the mornings?”
He was musing his fantasies to himself, mostly, but that didn’t stop the fire in his blood turning to an outright inferno at her trembling nod. Childe had truly stumbled into the most fortuitous work relationship, hadn’t he? That not only would his guide have such a cute little thing for him to play with, but to have her so beautifully accepting…
“Gonna play?” she asked, stunning him for a moment. Objectively, he knew she could speak and just largely refused to do so, but hearing her voice form coherent words and not the screams of a spoiled child took him aback.
Shaking off his surprise, his fingers returned to her little hole, dipping and spreading her wider as she started squirming again. “Play like this? Like you play with Zhongli?”
She nodded, going silent again as her hands twisted into her skirt.
“How often do you two play together?” If she was feeling talkative, he could get the true scope of how far he could go with her. What precisely he could do to her tiny body, though he would need to take care about leaving any marks for Zhongli to find…
“Lots. Morning, lunch… dinner. Bedtime.”
He had a new respect for the man’s appetite, but Childe couldn’t really blame him. A girl like Lumine was too perfect to leave empty for too long.
“Do you play with anyone else? Or is it just you two?” He thought back to how many excursions he had joined them on- had Zhongli been sneaking touches? Surely she had that plug in her, keeping all the morning’s cum inside her until he could fill her up again, but... “Did you play during our lunches?”
“No.” She blew her cheeks out in a pout, leading him to believe she was telling the truth. “Missed lots of playtime.”
Childe beamed, hands going to rub into her thighs, seeing how tantalizingly small she was to him. “I’m sorry about making you miss your playtime with Zhongli. Do you want me to play with you to make up for it?”
She kicked her feet out as she thought, tilting her head as she stared off into space before turning her- quite suddenly intense- eyes on him. As if she was analyzing, calculating. Determining if he was worthy or not- which, if she was an adult, would be a fair thing to expect. But from a little girl, one smaller than even Teucer, it was… disconcerting.
Finally, she graced him with a nod, watching him move in front of her. It was almost shameful how excited he was to have her agree, fumbling with his belt and pants, that the fact he wouldn’t have taken no for an answer left his mind entirely.
“Come on then, girlie,” he said with a smile, shoving his trousers down haphazardly with one hand as the other tugged her dress over her head. She deigned to help him a bit, lifting her arms so the garment could be pulled free with ease as she giggled. Part of him wondered if she found his eagerness funny, but every other part of him knew that children laughed at pretty much anything.
He lifted her off the table to settle her back on his lap, her warm core that was still dripping Zhongli’s cum now pressed deliciously on his aching cock. For the better, as he was sure she was far too young to get wet on her own, and he was too impatient to grab the lube from his bedroom. Perhaps later, if they ever paused long enough to make it to his bedroom.
Her little hands clutched at his shoulders, allowing him to move her as he pleased. His own hands on her hips- almost wrapped completely around her, she was so small- directed her, grinding her down on his cock as he hissed. Lumine’s mouth had parted again, small gasps escaping as he occasionally brushed her clit, cherry red lips practically begging for him to kiss them.
Flashes of what he’d absolutely be doing to her crossed his mind, making his cock jump beneath her. He’d indulge those thoughts later, find out how beautiful she looked when he made her swallow him as deep as he could go, but now he had an impatient temptress of child frowning up at him.
“Play,” she whined, trying to rub against him on her own.
“He really has spoiled you, hasn’t he?” Childe murmured, lifting her just a bit. “Just be a good girl, Lumine.”
He angled himself to her entrance, keeping her still as he pressed just inside. With her on his lap, Childe was left only with watching her face- he'd watch her cunt stretch around him later- as he slowly pulled her hips flush with his, hands gripping her almost as tightly as she was gripping his cock.
Her face turned slack, eyes falling shut with her cute little gasps spreading across his neck. She had been perfectly trained to take cock, as he should have expected from a man like Zhongli, accepting him so completely without the slightest complaint. Soft and hot, wrapped around him like a vice with an expression like she knew she was meant to be filled.
“Oh, Lumine.” He pressed his face into her hair, reveling in the ecstasy from just being inside her. Neither Tonia nor Teucer felt so unbelievably perfect around him, squeezing like she was trying to draw him even deeper. “Do, ng, do you want to keep playing with me?”
Her nod was limp, unfocused, starry-eyed and flustered as she was.
“Of course you do, perfect girl,” he cooed, wrapping his hands under the soft, cute curve of her ass to drag her up, almost off his cock. “Bet having your little hole filled up properly feels better than that plug, yeah?”
Another limp nod, accompanied by a yelp as he slammed her back down, watching the little distension the head of his cock made in her navel. So small, yet so unbelievably fuckable.
He started up a harsh pace, every other breath from her coming as a squeak, thrusting up to meet each time he pushed her hips down. Her cunt made lewd, wet squelches, reminding him that he was fucking another man’s cum even deeper inside her, to the point the excess was staining his pants. But that was more than fine by him, allowing him an easy slide in her tight heat.
“What a good little cockslut,” he panted, pressing quick kisses along her cheek. “Swallowing me up to the damn hilt. I’ll keep your hungry little cunt fed and bred until Zhongli comes back, how does that sound?”
Her gasps pitched higher, fluctuating with each hard bounce down onto his cock. She was tensing in his arms, cunt clenching and bearing down on him even as he continued to fuck into her. Her stiffness rapidly turned to a shudder, until she ultimately fell limp against his chest, moans coming unrestrained from her pretty mouth.
“Oh, fuck yes, come on my cock, Lumine. Show me how much you love being used.”
Childe never could last long when he indulged his desires, the combination of the tightness of a little kid’s hole and the absolute depravity of knowing he was defiling someone too young to truly understand coming together to drive him to brink faster than he ever could with his hand. Lumine had him lasting the shortest, the constant clenching of her cunt around him demanding he fill her, and who was he to deny that request?
A few rough slams later and he was coming inside her, stuffing her back up with another load as he held her tightly against him.
Neither tried to move for a long while, though Childe was sure the girl had passed out at some point. His dick twitched inside her at the thought of fucking her unconscious body, though he laughed at it all the same. Considering what he knew of her now, and how spoiled she was, Lumine would almost certainly throw a fit if he played with her when she wasn’t awake to enjoy it. Perhaps he would be able to calm her down with an even rougher fucking.
He lifted her head up so he could look at her, her glazed, shining, golden eyes blinking lazily back at him.
“Am I good enough to play with while Zhongli’s gone?” he asked, grinding his still-hard length into her.
“Mhm,” she sighed, laying her head back down as she twitched around him.
“That’s great to hear...” Childe lifted her by her hips again, letting her slide back down on his cock in a much less frenzied manner than before. “We’ve got a few days to ourselves, we’ll have lots of fun together...”
It would be some time later, when he was no longer solely consumed with how fantastic she felt, that he noticed the room had been filled with little sparkling constellations. Zhongli's special little girl just got more and more special with each new thing Childe learned about her, compounded with each moment he spent wrapped up in her cunt.