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Summary:

For Lumine, defeating weekly boss, Childe, isn't really hard, but something else is...

"What the hell, Childe?!"

"What? I can't help it, my sweet Lumine. You're so hot when you floor me."

Notes:

Hello!! It's Momo, bringing you more ChiLumi fluff. This is a fic I made just for fun. It was unplanned and very spontaneous. I was just being silly when I thought of this and decided to write a short fic about it. hahaha read at your own risk!

Warning: This isn't smut but I guess you have an idea of the theme based on the summary 😆

[cw: suggestive themes, slight steam, cursing]

(See the end of the work for more notes.)

Work Text:

It's that time of the week again when Lumine pays a visit to the Golden House for her favorite boss fight.

Childe sure was a great fighter, but for some reason, it was easy for Lumine to beat him up, at least as compared to Azhdaha.

She sometimes even wonder whether the man was just going easy on her, but she doubts that. Childe holds pride in being a warrior, and as a comrade, he respects Lumine's strength. Needless to say, no matter how sly he was, he's an unexpectedly honest man who fights with honor.

When she opened the door to the domain, she finds Childe sitting in the middle of their battlefield, staring intently at the entrance with his hands on his chin. The way his eyes lit up when he saw Lumine enter gave out the fact that he was actually waiting for her.

Like a puppy to its master, he hastily stood up and quickly ran up to her.

"Finally! I've been waiting for you for ages, comrade!" He said, putting one arm around her shoulders and dragging her towards the battleground. "I've trained a lot in secret. I'm pretty sure you won't beat me too easily anymore."

Lumine snorted and pulled herself away from Childe's grasp. "You sure about that? I hope you make me sweat this time." She teased, playfully raising her eyebrows at him. 

"Oh." Childe laughed and winked at her. "Well, if this does not work, there could always be other ways I could make you sweat." 

Knowing full well what he meant behind those words, blood rushed up to Lumine's cheeks. "Shut up, you stupid idiot." 

"Stupid, idiot, moron, fool.. Ahh, I love your endearments for me, Lumi. It's full of..." Childe trailed as he fixed his clothes and took his fighting stance. "Love."

Lumine wanted to deny it but unfortunately, she's not a good liar.

Childe was a royal pain in the ass and was the only one who could stir her feelings and piss her off to the heavens. But at the same time, out of everyone she had met, Childe was the sole person who could make her feel such deep and intense emotions.

Just like everyone said, there's a thin line between hate and love, and admittedly, it had already been a while since she tripped at that thin line and fell to the other side.

"Less talk, more fighting." Lumine said as she drew her sword and readied herself for the results of the so-called secret training that her opponent had done.


Their battle lasted longer than the usual. Indeed, Childe was even stronger than he was before. Every time they fight, he keeps getting better. He says it's because the battle high he gets from fighting Lumine ignites his drive to be stronger.

The clang of Childe's weapon as it dropped to the floor echoed throughout the domain before disappearing like a mist. 

The battle was over. Though tired and wounded more than usual, Lumine emerged again as the victor. She was straddling Childe on the floor, the blade of her sword drawn close to his neck.

Both of them were covered with blood, wound all over their bodies, and their breathing ragged in sync.

"Ahhh," Childe breathed. "I'm supposed to be defeated but why do I feel like I won?" He smirked, his gaze scanning up and down Lumine, obviously liking their current position. Despite the blade in front of his neck, Childe was brimming with confidence and satisfaction, his eyes flickered with something Lumine can't decipher.. but soon will.

When Lumine shifted on top of Childe, she was frozen on the spot. With face flushed as a tomato, she dropped the sword on the floor beside them.

"What the hell, Childe?!" She screamed in embarrassment, glaring at the man under her.

"What?" Unfazed, Childe chuckled and lazily raised his hand to trace Lumine's face. "I can't help it, my sweet Lumine. You're so hot when you floor me."

Though their fight was tiring, it was not really hard for Lumine, but something else is.. him. 

The idiot was fucking hard!

"You're a stupid pea-brained pervert!" Lumine exclaimed, her cheeks flaming.

"Oh, another endearment for me, my darling?" Childe teased as he watched her scramble to stand up and move away from the hard thing pressing beneath her. 

Childe couldn't help but groan. His face was scrunching from the pain from his wounds, but more so from the effect the woman had on him. "You're just making it harder for me when you move like that."

He gripped her hips to steady her and pressed her against him more. Lumine's heart somersaulted in her chest and raced as if wanting to join a freaking marathon. Was it because of the fight or was it because of something else entirely?

"Childe..." She silently muttered both in warning and from the sudden need to say his name.

The man tightened his grip on her hips and took a deep staggering breath. "Let's go home, Lumine."


"Ahhh!" Childe's whines filled the room as Lumine bandaged his wounds.

"You're so dramatic." Lumine hissed and purposely tightened the bandage on his shoulder causing him to wince.

"You were so brutal to me today, Lumine." He complained but it was accompanied by a playful laugh.

"And yet you.. get.." Lumine started, unable to continue in embarrassment. The stains of red were back on her cheeks as she remembered their compromising position back at the Golden House and the weird reaction of Childe's body towards her flooring him.

"Hard?" Childe continued for her and shot a seductive smirk. "Can you blame me, Lumine? You're damn hot when you're fighting." He said as if that was a naturally valid defense.

Pushing Lumine's hand out of the way, Childe adjusted the way he was sitting on the bed so that he could lean closer to the blonde. He cupped her face with his hands and ran his thumb lightly on her lips.

"The sweat dripping down your neck," He whispered as he ran his nose down her neck and deeply breathed her in. "The way your dress clings to your body, the way your chest heaves up and down as you try to catch your breath," He ran his hands on the outline of her body, faintly brushing her chest, sending good shivers down her spine. "The way your arm and leg muscles tense when you try to blow a hit at me," His hands continued its conquest of her body running it down her bare arm and legs.

He then slid his hands up again until it reached her face. He softly placed a gentle kiss on each of her eyelids, "And those fierce, beautiful, golden eyes focused on nothing else but me, they all set me on fire." He finished. He pressed his forehead against hers and stared intently at her.

Lumine's breath got stuck on her throat. This man was a goddamn ladykiller.

"You won, as usual, comrade. You deserve a reward." Childe said, his voice dripping with the sweet poison of seduction. He then pushed her to the bed as he climbed on top of her. He pinned her hands on top of her head with one hand, but his grip was loose enough to indicate that she was free to resist.

"We're both bloody and bruised, yet this is still what you can think of?" Lumine complained, yet she could not find it in her to want to get out of his grip.

Childe laughed before pressing his hips against hers making the lady gasp as she felt him again.

"Fuck pain, this is all I can feel right now." He drawled in a strained husky voice that reminded Lumine of an untamed beast ready to pounce on his prey.

Lumine awaited his attack but he stayed still only drawing his face close until their breaths could mix. 

"Your consent, please, my lady?" He quietly asked.

Lumine laughed at the back of her head. She was comparing Childe to a beast, but funny enough, he was the only beast who ever asked his prey permission to attack.

The blonde pulled her hands away from Childe's grip above her head, but only to wrap it around his neck and pull him close to her. She touched his lips with a feather-like kiss once, twice, and before she could do it thrice, something dark flashed on Childe's eyes before claiming her lips for his own.

He kissed her so hungrily, the taste of blood on her chapped lips not bothering him even just a bit. He devoured her, his tongue exploring every corner of her mouth. "Scratch that, everything about you sets me on fire. Every single thing about you drives me insane." He said against her lips. He put his hand on the back of her neck and pulled her as if how close they already are isn't enough for him.

"Lumine." Childe muttered when he pulled away to rain kisses on her jaw and biting its corner. His lips travelled to her ear nibbling on her earlobe and tracing its outline with his tongue, sending pleasurable shivers all over her body. He then slid his lips down to the corner of her neck and sucked on it until it bruised.

"Say it, Childe." Lumine moaned under her breath as her hands started touching him over his shirt, exploring the hard muscles of his torso. Childe groaned and shivered under her touch. He then took a deep breath in an attempt to calm his nerves before he complied.

"I love you, Lumine."

Lumine grinned in satisfaction as she placed a kiss on his head, her hands gripping his shirt tight. 

"Say it back." Childe demanded in a growl, pressing his body tighter against her enough to make her lose all senses.

"I love you, Ajax." She answered. It was the easiest order he had ever made. Loving him was as natural for Lumine as breathing and ever since they got together, expressing it was what they demanded from each other.

It was like their own set rule. Whenever they touch, they make it a point to express their feelings in order to remind each other that though filled with unending lust for the other, it wasn't just that that was pushing them to do this.

There may be desire to monopolize, to own and be owned, to express, to feel, but most of all, it was love.

"These clothes are getting in the way. I want to feel you." Childe whispered against her ear before standing up on his knees in an attempt to take off his shirt... and freezing.

"Fuck." He cursed under his breath.

"What's wrong?" Lumine asked as she raised herself to her elbows.

"I think.." He started and groaned. "You broke my back."

"Huh?"

Confusion was written all over Lumine's face for a few seconds before it had finally dawned on her.

A flashback of what happened during their fight in the Golden House replayed on their minds. At the end of the battle, Lumine leaped at Childe causing him to land on his back which then leads them to this situation.

Lumine stared at the frozen man above her before bursting out laughing.

"Hahahahaha! You're... I... Hahaha!" Lumine wheezed, wiping the tears coming out of her eyes.

"Stop laughing, Lumine!" Childe growled but Lumine ignored him and continued her laughing fit.

"That's what you get for being a pervert." Lumine teased in between her laughters. She was even hitting the bed, having the time of her life. "Fuck pain and all that.. Pfft.. Hahahaha!"

Furrowing his eyebrows, Childe pressed his eyes close as he clenched his jaw. He took a deep breath before gripping Lumine's arms and pulling her up until they were eye-level.

He placed her ear in front of his mouth before whispering, "Once this heals, I'll be the one breaking your back. It won't be in the Golden House though." Lumine's laughing fit abruptly stopped when Childe spoke those words and then bit her ear. She yelped and pulled away from him.

Childe shot her a sexy smirk, his hand slowly sliding down her back and pulling her against him. "It would be here. Right here. On this bed."

Lumine's mouth almost fell to the floor. She remained dumbstruck when Childe's grip loosened and dropped her in the bed.

The man looked silly as he tried his best to get out of the bed and drag himself to their bathroom, but Lumine could not dare laugh again.

She could feel all the blood rushing to her cheeks and her heart hammering hard against her chest.

When she could finally remember that breathing is required to live, she buried her face on the pillow and screamed. "Childe, you perverted idiot!!!!!"

She heard his beautiful, hearty laugh as it echoed from the bathroom. "You married this perverted idiot, Lumine. You're never getting away from me." He teased and all Lumine could do was throw the pillow on the bathroom's door.

The day ended with Childe having to deal with messed up bandages he applied himself. Apparently, Lumine doesn't want to help him heal because it would only aid the earlier commencement of his revenge plot against her.

Childe could only laugh.

It's true that his wife always beat him in their weekly sparring, but this does nothing to lessen his love for her. In fact it makes him even prouder. He was proud of her strength.

He was truly proud that this strong woman was his.

And he was completely hers.

Hers and hers alone.

From now and forever.

Notes:

I made this as a joke so if you finished it, I would like to express my gratitude. Hahaha. Also, I wanted this to be, like, a continuation of my other work "Blissful Mornings" but I stated there that Childe was not a harbinger anymore and I'm not sure whether he can still be a boss despite not being a harbinger.. so whatever. Anw, thanks again!