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primofate · 2 years

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“Can I date Y/N, please?” [Genshin Impact - Diluc and Kaeya’s sibling edition]

Summary: In which your potential Genshin lover asks your Genshin sibling(s) if he can date you.

Characters: Diluc and Kaeya as your brothers, Aether, Albedo, Venti, Bonus: Tartaglia, gn!reader

Notes: There was a similar request a while ago but for the volleyball AU, I might do that or I might not but what are your thoughts on this brand new brainrot I have? I felt like I just needed a change of pace about what I write, needed something platonic-ish but also cute and funny??? idk. These days I feel like my genre is changing a little, or I just need a break from romance.

Warnings: crack elements, fluff, overprotective siblings, alcohol consumption, Diluc and Kaeya are civil towards each other, complicated deception in Tartaglia’s part, I only mixed and matched certain characters cause I thought those would be particularly interesting, some are longer than the others cause I enjoyed writing it more.

Your brothers: Diluc & Kaeya

Who wants to date you: Aether

“Relaaaaaaax, you’ve fought a giant dragon before, this is nothing!” Easy for Paimon to say, Aether thinks. Not for him, when he was going to ask Diluc and Kaeya for their blessings to date you. The Kaeya part, not too bad. The Diluc part...Aether didn’t know what to think.

“H-Hey, you two! C-Can I talk to you, real quick?” As the night descends Aether finds Diluc and Kaeya outside of the tavern, sharing a table together, like you said they would on Friday nights.

Kaeya’s eyes light up, tipping his glass of wine over to Aether, delighted that the traveller had decided to join them this evening. “Look who it is,” his voice, smooth as ever glides towards Aether. Diluc glances over to Aether, moves a glass over to the empty seat and curtly says “Take a seat,”

Aether feels a lump on his throat as he sits quite stiffly. Paimon seems to have stiffened up too, her talk of being brave all down the drain. “To what do we owe the pleasure tonight?” Kaeya asks while asking Aether if he wanted wine or grape juice. Aether opted for the wine, feeling as if he needed more liquid courage.

“Uhhh...” Aether starts, watching as Kaeya poured the wine, eyes darting up to Diluc who was also looking at Aether expectantly. “Well, ummm... nothing major, or dangerous, really...” he lets out a nervous laugh, tips his head as thanks towards Kaeya when he finished pouring and adds, “It’s just...about Y/N,”

Both of your siblings’ heads snap up to attention and in unison they say, “What about them?” Suddenly the fresh air seems to have disappeared despite sitting outdoors and Aether’s hands start to feel a little clammy. It looks as if neither Kaeya nor Diluc breathes, just staring at Aether to continue, blank looks on their faces.

“They...uh...They’re really nice company, you see.” Aether starts, hands coming together on top of the table, eyes darting back and forth towards Diluc then Kaeya. Their blank expressions haven’t changed.

Aether clears his throat and continues. “And, well, simply said they...They’re really nice, really...” Aether remembers you in his mind’s eye, and for a split moment he looks to be in a trance, thinking of how his heart palpitates just at the sight of you. “Really charming...Y/N is just... so...” he snaps out of his daydream immediately and straightens up again, remembering he’s in front of your siblings and it was not the right time to be dreamy-eyed right now.

But Diluc seemed to have a look of realization on his face, Kaeya chuckles and pours himself another glass of wine. Neither of them say anything, letting the traveller finish his sentence. “...Sorry,” Aether clears his throat again, “I...I’d simply like your permission to date them. Uhm...We’ve been on a few dates already, actually... I just...” Aether averts his eyes when he feels the heat on his cheeks. “I’m serious about Y/N, I just wanted to let you two know,”

There’s a moment of silence, just the sound of Kaeya sipping on his wine and clinking his glass back down on the table, before he spoke up. “Come now, traveller, you don’t think we haven’t noticed?” he grins.

“Huh?” Aether lets out, dumbfounded.

“Y/N’s been going out more frequently, it isn’t difficult to notice,” Diluc responds, closing his eyes as he takes a sip of his grape juice too. “Besides, the two of you walk around town quite often. I didn’t think it was such a big secret,”

“O-Oh...” Aether laughs nervously and scratches the back of his head. “S-So, you’re okay with it?”

“Well not so fast there, my friend!” Kaeya seems to be the more jovial one. Seems to be the one who is “okay” with everything, but on closer inspection there’s a glint in his eye, whilst Diluc actually looks calmer and more put together. “Do you really know our Y/N that well? Let’s test your knowledge, shall we?” Kaeya proposes, to which Diluc holds back a sigh. One of his silly games again, it seems.

“Kaeya here might want to test you, traveller...but I have no qualms with your relationship with Y/N......Provided that Y/N’s happy...but you have a lot of things on your hands,” Diluc’s gaze hardened for a split moment, and Aether knew what he was implying.

Aether’s search for his sister, his journey across nations and his adventuring were all a big part of his life. “Are you sure you have adequate space for Y/N in your life? If not...then I suggest you reconsider,”

It was more of a threat than anything, but Aether knew where it was coming from. What did he expect, trying to go through your two brothers who seemed like night and day, and yet similarly protective of you? Kaeya cuts the tension with a laugh. “Serious as always. See, all you have to do to get my blessing is to play a game with me, traveller,”

“Are you two trying to bully Aether?” The three of them swerve towards your voice as you stand there with your hands on your hips, eyes furrowed, shooting a concerned glance towards Aether. “I was getting worried when you didn’t show up at our meeting place,”

“No such thing,” Kaeya beams at you and Diluc casually shakes his head. “Not at all,” then they went back to drinking their respective drinks.

You sigh and place a hand on Aether’s shoulder. “I told you, you didn’t have to do this, they’re just going to make your life harder. I can date who I want, you know?” you smile at him reassuringly but Aether laughs nervously, feeling sweat on his temples.

“Come on, let’s go. Leave these two behind, they’ll get over it!” You insist, tugging on Aether’s sleeve and he complies as you turn to walk away first.

Aether turns back around to bid your brothers’ goodbye, only to find that they’re sporting rather eerie and perfect grins on their faces.

“See you around, traveller. Watch your step,”

Who wants to date you: Albedo

“You want to date Y/N?” The surprise in Kaeya’s voice is obvious. He didn’t think the alchemist was one to be interested in such things, but the fact that he had come out of his lab and visited Kaeya over at his personal office in the Favonius HQ, Kaeya had a feeling that Albedo was more than just interested.

“Yes,” The blonde replied curtly. Kaeya thought there was more of an explanation, but none followed and it was merely just himself and the alchemist just staring at each other now.

“...Is there...any reason for that?” Kaeya pries, not willing to just say yes so easily when it didn’t even seem like Albedo showed any genuine interest towards you aside from his words.

“A reason...you say?” Albedo thinks out loud, his hand coming up to rest under his chin. A few seconds pass by and as much as Kaeya respected Albedo and saw him as a good ally, his application to date you wasn’t going very well, until he started speaking again.

“...Truthfully I don’t understand it very clearly myself,” the Kreidiprinz starts. “It’s a rather peculiar feeling...of wanting Y/N by my side,” Albedo turns away and looks off into a faraway distance. “I enjoy Y/N’s observations, their ramblings, their view on certain things in life...but if you ask me for a logical reason of why I would like to date them...There isn’t one, I suppose it’s more of an emotion than a logical reason. I simply want to spend more time with them, an impossibly, illogically long time. More than I’ve already spent with them.”

Kaeya is rendered speechless by the whole thing. The alchemist had managed to answer his question in a rather unconventional yet truthful and sincere way. It sounded just like Albedo and Kaeya couldn’t help but laugh. “Looks like today’s full of surprises,” then he stands up and starts to stack the papers on his desk without giving Albedo a reply.

Albedo senses the avoidance, but is brave enough to ask again. “I assume I have your blessing, then?” his eyes follow Kaeya’s form who shrugs easily with a smile “I don’t see why not. You’ve always been a man of your word.”

“...Thank you...Would you happen to know where I can find the master of Dawn Winery?” Albedo asks and Kaeya is once again dumbfounded by how serious Albedo actually was about you.

“Diluc? Oh don’t worry about him, he’ll be fine,” Kaeya waves a hand, and Albedo is immediately suspicious.

“...I...insist. If I personally told you, it’s only right that I personally tell him as well,” Albedo reasons but Kaeya again dismisses him.

“Tell you what, I’ll tell Diluc and you won’t have to worry your head over it,” Kaeya proposes and again Albedo hesitates. It’s not that he didn’t trust Kaeya...well, maybe he didn’t, not a 100% at least, but Kaeya immediately pulls the ‘brother’ card. “You trust me, I’m Y/N’s brother after all, right?” Kaeya felt the hesitation in Albedo, but enjoys the way the alchemist seems to battle with himself on whether to say yes or no.

“...I...suppose I can let you handle it,” Albedo relents, and Kaeya claps the smaller man’s back. “There you go!”

Kaeya never told Diluc. Did he forget? Possibly. Did he do it on purpose? Most likely.

Diluc had to learn the hard way, and Albedo had some explaining to do.

Who wants to date you: Venti

“Absolutely not,” Diluc doesn’t even look up from his task of drying glasses at the bar, watching as the white cloth wipes up the residue from the cup. He doesn’t even know if the bard is serious, but Diluc has the impression that “serious” wasn’t a word that Venti usually used.

“Aweeeeee come on, why not? I can take care of Y/N! You know that, right?” Venti, sitting on a bar stool situated in front of Diluc, starts whining. Diluc’s eye twitches, he’s aware what Venti really is, and is aware that Venti can absolutely protect you. “Take care” of you though? He had his doubts.

“Protecting them is completely different from taking care of them,” Diluc simply says to which Venti hums in thought, touching his braided hair absentmindedly as he replies.

“I can do both!” He cheerfully restates and rocks back and forth excitedly on his chair.

“Forget it,” Diluc says with finality, though he knew in the end he couldn’t really stop you from making your own decisions, at least he could convey to Venti that he wasn’t completely onboard about the whole thing.

“Why are you so against it? I’ve been nothing but a good patron to your establishment!” Venti yet again protests playfully. Diluc finally picks his gaze up to look at Venti with a half-serious glare.

“A good patron? By ordering dandelion wine every night, getting drunk and forgetting to pay for it? You really think that’s the kind of person I’d want for my sibling?”

Venti slinks backwards with a nervous laugh. “I just pass out before I can hand you the money that’s all. Next time I’ll pay before drinking, eh?”

Diluc’s glare doesn’t falter. “No,” yet his hands continue to wipe. “Pay for all the ones you’ve consumed before and maybe I’ll think about it,”

Venti gasps, hand coming over to his chest. “Are you...Are you selling your sibling?! Are you saying if I pay for all the dandelion wine I’ve consumed...I’ll have your blessing?”

“I said I’ll think about it, I didn’t say yes. Besides, paying for what you consumed is common human decency,”

“Oh, good thing I’m not human then,” Venti mumbles but Diluc hears it and is an inch close to throwing the bard out of the tavern, and also forbidding you from seeing him ever again, but Kaeya walks in.

“What’s all the commotion here?” he asks, chuckling at the face Diluc was making. He looked like a volcano that was about to erupt.

“Ah! Drinking buddy!” Venti was delighted to see the knight of Favonius, thinking that he had an ally now. Kaeya salutes at Venti and takes a seat next to him on the next barstool. Diluc immediately breaks the news to Kaeya.

“This bard wants to date Y/N,” Kaeya blinks, letting Diluc’s tone and livid expression finally settle in.

Kaeya chuckles and turns to Venti, “Really now?” as if an amused child who just discovered something wonderful in a museum. “And what makes you think we’ll agree to it?” Kaeya attacks immediately and Venti is wounded.

“What? I thought you were on my side! We’re drinking buddies!”

“Precisely why I’m not sure if Y/N’s a good match for you,” There’s something a little menacing about Kaeya’s smile. “Doesn’t paint a nice picture, thinking that you’re here every night while Y/N’s all alone, you see,”

“I’m NOT here every night!” despite Venti’s cheerful disposition even that comment gets to him. “Besides, once me and Y/N are official I’d rather spend that time with them,” the bard huffs, not noticing the glint in your brothers’ eyes.

“Well, let’s settle this with a drinking challenge then,” Kaeya suggests, motioning for Diluc to give them two glasses. “You’re only worthy if you can hold your alcohol better than me,”

“Deal,” Venti is overconfident when the challenge starts. Unfortunately for him Kaeya and Diluc had already done this before. Halfway through the challenge when Venti is a little tipsy, Diluc starts pouring grape juice instead of wine into Kaeya’s glass.

Venti doesn’t understand how Kaeya wins every time.

Who wants to date you (bonus character): Tartaglia

(I sincerely think this needs a whole fanfiction of its own. Tartaglia dating Diluc’s sibling is a complicated disaster waiting to happen but I still wrote a small snippet because I think it’s an interesting thought)

“Tell me where you met him again?” Diluc asks you, pulling his glove on his hand to start the day. It should have been a normal day like any other, with Diluc going on his usual patrol in the morning, but you had sidetracked him, told him that you wanted him to meet someone, and that you’ve invited Kaeya over to the mansion as well.

Diluc could tell that whoever this person was, you already had a certain liking towards them.

“At Liyue, brother,” you say, mentally making a note that this was probably the third time you’ve said it. You can tell Diluc is anxious, possibly because this was a total stranger to him. Someone who wasn’t from Mondstadt, someone who he was only hearing about now when you have apparently been seeing him for months now.

“Why did you only tell me now?” Diluc adds, dusting his coat off and finally turning to you, brows furrowed, arms crossed. You smile apologetically.

“Well, he’s a busy person, and I was trying to find the right time to tell you.” You explain and Diluc doesn’t budge from his position as he questions, “Busy, you say?” How was he going to look after you if he was “busy” as you said.

“Yeah, a bit like you, actually. Running around doing errands,” Diluc almost winces. Since he was also a busy person, he couldn’t really say anything bad about this other person being busy. That would be hypocritical.

“10 minutes, and I’m off to work,” Diluc grumbles, but sees the delight in your eyes and he’s always had a weakness for your happiness. There’s a slight commotion downstairs which the two of you can hear, since the door to his room is ajar.

“That must be him!” and again the joy that sweeps your face is immense, Diluc is almost angry that an unknown man was able to make you this happy. He sighs and follows after you down to the living area.

Sure enough, there’s a tall man, chestnut brown hair, charming smile on his face, holding flowers. Childe’s eyes light up as well, the moment he sees you jogging down the stairs and he somewhat hesitantly opens his arms to you. Diluc doesn’t know whether to grimace at the sight of you jumping into them and him spinning you around once with a laugh, or just ignore the whole thing altogether.

For a moment you and Childe are stuck in your own world. With him telling you that he missed you, it’s been a while, and passing you the sunflowers in his arm. You’re overjoyed by the sentiment and look up at him with awe, Diluc clears his throat at that moment.

“This is my brother, Diluc. This is Childe, brother,” You introduce them briefly and Childe is the one who stretches his hand out first, Diluc only follows.

Childe knows well who your brother is, it’s the exact reason why he took extra precautions today, like his delusion being concealed. Did he originally know that Diluc was your brother? Not at all. But when he found out, he was much too in love with you already. He’d make it work, right?

If you found out that he was part of the Fatui, it’d be a problem. But if your brother found out... that would be a completely different and bigger problem.

So, he kept his facade.

“...Where do you work?” Diluc suddenly asks. He doesn’t even ask how Childe is, if he’s tired from the long journey or how the two of you really met. He gets straight to the point, and something in his instincts is flaring up.

Childe gives a pleasant smile as he takes his hand back. “The Northland Bank in Liyue, Internal Affairs,” Childe stays by your side, comforted by your presence next to him. Truthfully he’d go through any hurdle just to have you, even if it meant tearing you away from family. Was that too much?

“...The Northland Bank?” Diluc questions, eyebrow raising. “A Snezhnayan bank...and you don’t look Liyuen at all,” Childe chuckles at Diluc’s observation and gives a simple explanation.

“I’m originally from Snezhnaya. Just in Liyue for business... All my siblings are back in Snezhnaya though, so I travel pretty frequently just to see them,” Playing the ‘I’m a family guy’ card was usually a nice place to start, though Childe wasn’t sure if that was able to fool Diluc, because the red head said nothing.

“...Enjoy your stay in Mondstadt, then,” Diluc simply says and stalks off towards the door. You’re not surprised at how curt your brother is, he’s usually like that with new people, but you assumed Kaeya might be a bit more welcoming. You whisper towards Childe to reassure him. “Don’t worry, he’ll warm up later on,” and he only smiles back at you.

Just before Diluc reaches the door it opens to reveal that Kaeya has arrived. As usual he’s got that grin full of mischief on his face, but his eyes dart towards you and Childe immediately. “Ah, this must be the gentleman I’ve been hearing about,” Kaeya starts.

“Sir Kaeya, it’s nice to meet you. I’m Childe, I’ve actually brought a bottle of wine from Snezhnaya--”

“Actually,” Diluc cuts through the conversation, then places a hand on Kaeya’s shoulder. “Kaeya’ll be coming with me for a minute, he’ll be back later,” and gives Kaeya a pointed look before taking his hand back and proceeding out the door. Kaeya doesn’t falter and doesn’t look surprised at all, it must have been something important, he knows that look on Diluc’s face. So, Kaeya shrugs and addresses you and Childe.

“It won’t be long, I’ll catch up with you later. Do leave the wine with the maids. In the meantime, the two of you should walk around town for a bit,” Kaeya waves, still the ever present charming smile on his face before turning and disappearing out the door as well.

Childe can’t help but let out a sigh, he doesn’t know out of stress or out of relief. You pat his back and give him a sympathetic look. “They’re just a little strange, but they’re good people, I promise,”

Childe chuckles under his breath and places a hand on your back, smiles down at you and presses a quick kiss on your forehead.

“I’m sure they are,” he reassures you more than he reassures himself. He’s 100% sure he’s dug himself a grave. Something about Diluc’s gaze on him tells him that the Darknight Hero knows.

It’s a little strange that Childe most certainly knows that your brothers are good people.

Though, he can’t quite say the same thing about himself.

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