Hello and welcome to another story! This was a request from Anonymous, and is very heavy with sibling incest, so if that's not your cup of tea then best back out now.
This is story is set during Conquest, but doesn't really have anything to do with the story of that route. Also, Lilith has access to her human form in this. (Because trapping her in her fish-dragon form was kinda dumb tbh, and I'm also not about to write a lemon with her in that form.)
All characters are 18+
The war effort is going rather well, all things considered. The Nohrian army has achieved several decisive victories against Hoshido within the last few weeks, and Xander of all people had suggested that the army take advantage of their access to the Deeprealms and take some time to relax. With so many various Deeprealms to choose from, each with their own themes and things to do, it wasn't long before most of the army was split up between the various other dimensions.
Corrin, one of the army's more prominent leaders, finds himself in a small Deeprealm of mountains and snow, walking around a small village with his sister, Lilith. Naturally, after everything that had happened at the Bottomless Canyon, Lilith had told Corrin about them being siblings, and how she's really his only sibling by blood. Corrin was overjoyed at the news, happy to have true blood-related family at long last. After that, the pair became inseparable, and thankfully even Xander, Camilla, Leo, and Elise welcomed the girl with open arms. Though, it wasn't long before Corrin and Lilith became even closer than he had been with his adoptive siblings... Far, far closer.
It had started one night, when both dragonkin had been suffering through a bit of springtime heat. Lilith had approached him in his room, his instincts took over, one thing led to another...
And they've been frequently visiting each other in the dead of night ever since.
It's hardly a romantic relationship, and they both know it. Their taboo meetings are simply a way for them to tame the draconic lust that rises up in them all too frequently. They know society, Nohrian or otherwise, would frown upon them if their incestuous secret ever got out. So, they've adopted the normal siblings act for when they're out in public, and they keep the draconic lovers aspect of their relationship for when they're all alone.
Which is why they insisted to the others that they would be taking their little vacation on their own, in a different Deeprealm than the other royals. For some "sibling bonding time, since we spent so many years apart" as Corrin had put it when explaining their decision to Xander and Camilla. Thankfully, they seemed to buy that excuse. And, after successfully distracting Felicia and Jakob with other tasks, they made their way to this peaceful little mountain village.
The sky has already gotten dark, though neither of the siblings really mind the frigid air all that much. Arms linked together, Corrin and Lilith explore the town, browsing different shops and local food stalls. It's easy to relax here, since nobody knows or even cares who they are. Here, they can simply be themselves.
"Oh, Corrin! Let's try that over there!" Lilith says excitedly, pointing over to a vendor that appears to be selling some type of candied fruit. She hurries over to the vendor before he can even respond.
Corrin chuckles to himself, following the excited girl. He sometimes forgets that she hasn't gotten out much, after spending much of her life in the Northern Fortress as a stable girl. So she's seeing much of this for the first time, and quite frankly, Corrin is loving every second of it.
"Slow down, Lilith. We have a few days, there's no need to rush around" Corrin says, catching up to her. He's answered only by an open palm offering him a few pieces of the candied fruit. Lilith already has some in her mouth, and she seems to be enjoying the taste. Taking her up on her silent offer, Corrin takes the small candies and pops them in his mouth. They have a sweet honey taste, mixed with the tastes of the various fruits used in making them. They're quite good.
Corrin pays the vendor, and they move on. Lilith looks around the area, her gold eyes sparkling with seemingly endless amazement and wonder. The Nohrian Prince smiles and puts an arm around her, causing her to blush a bit but she doesn't argue the attention. She leans into him as they walk, enjoying the feel of being in his embrace.
"Hm... You know, there are hot springs nearby."
Lilith perks up and looks up at him. "Well, it would be nice to be in a hot spring that's more private than the one in your castle. And we could rent out a sm all one for just the two of us~"
"You just read my mind, dear sister" Corrin says with a smirk, leading her down a side street that leads to a popular hot springs place. "I think we've more than earned a little bit of rest and relaxation. Though..." Corrin leans in and gives her pointed ear a playful nibble, earning a quiet moan from his sister. "...I somehow doubt we we'll be fully relaxing in there."
Lilith matches his smirk with her own, pushing him against a nearby wall and standing on her toes to kiss him, something that the prince happily returns. He cups her face in his hands, tenderly caressing her cheeks as their tongues wrestle. After several heated moments, they break the kiss for some much needed air.
"Come on... Let's take this to the hot springs."
Corrin relaxes, his arms resting on the sides of the small hot spring that he had managed to rent out for the night, meaning that they have all the privacy they could want here. The water is the perfect heat, steam rising up into the air as snow gently flutters down from the sky, the flakes melting long before they even reach the water. He hears footsteps approaching, and he glances behind him to see his sister and vacation companion approaching.
Lilith's body is wrapped in one of the plain white towels that they provide in the changing rooms. Her long, beautiful hair has been let down, the dark blue color flowing past her neck and shoulders until it fades into the deep crimson color that covers her back. Reaching the edge of the water, she looks down at him with a smirk and a glint of lust in her golden eyes. She undoes her towel, letting it drop to the ground, gifting Corrin with the familiar sight of her naked body. She steps down into the water, submerging herself up to her chest as she takes a seat next to her brother.
"I don't think I'll ever get used to seeing you like this."
"Hehehe... I know~" Lilith purrs, hugging his arm. Her modest bust is squeezed against him, causing the prince to blush. She blushes herself and giggles. "You're so cute when you're all flustered. I'll never tire of teasing you."
"You really shouldn't tease your brother in such a way" Corrin responds with a knowing grin.
Lilith looks up at him with a raised eyebrow. "Oh, you're acting like we haven't done much more inappropriate things together in the past. Or even that we're naked together in the hot springs?"
Corrin gives a brief chuckle, though Lilith isn't done.
"...Or that I'm doing this?" Lilith hoists herself onto his lap, facing him. She the first thing she feels is a rather massive cock pressing against her cunt, Corrin's draconic heritage definitely has its perks. The aforementioned dragon prince's hands quickly take to wandering her slim, fit body. She's not particularly muscular, but years of stable work mixed with her own draconic heritage has left her with a wonderfully toned body that any man or woman would love.
Corrin's attention seems to focus on her soft, pillowy ass. Lilith's rear seems to be a favorite of his, as nearly every one of their midnight meetings involves quite a lot of ass groping; but Lilith isn't complaining, she loves anything that her brother does to her. It might sound sappy and cliché, but after her past as Anankos' puppet, she's just happy to be in the arms of someone who loves and appreciates her, even if that that someone is her own brother.
Lilith kisses him, reaching down and taking hold of his cock. She lifts herself up, before lowering herself down onto her brother's throbbing draconic member. The thick shaft fills her up, stretching her out until she's fully sitting on his lap again. Even without any movement, just the feeling of such a huge rod inside of her paired with the hot water from the springs is pure, unrivaled bliss. Though, as all things must come to an end, Lilith begins riding her brother's cock, bouncing up and down on his lap while he wraps his arms around her, holding her close against him as they take it nice and slow.
Corrin has learned from their many nights together that Lilith sometimes likes to start things off slowly and gently, though the majority of the time they get pretty heated right from the start. However, no matter how hot and heavy their lovemaking is, they always end it with slow and gentle sex as they simply enjoy being in each other's arms. Lilith seems to prefer it that way, and Corrin will never argue such a blissful yet taboo union. No matter what the world throws their way, no matter how many hardships they must face, they always know that they can find peace and tranquility in the embrace of the other. Perhaps this is evidence toward the theories of fierce familial loyalty among dragons?
He leans in kisses her, feeling her soft fingers lightly trace over his slim yet very muscular build. His years of constant training with Xander and Gunter is very evident on the prince's body. He breaks their kiss, immediately moving down and planting a series of kisses on Lilith's neck, enjoying the feeling of her smooth skin as he slowly makes his way to her collarbone, where a collection of hickeys are already present.
"Corrin... I'm close..." Lilith moans out, not wanting his tender kisses to end.
Corrin nods in understanding, moving his hands to her hips as she increases the speed of her riding him. Within moments, Corrin thrusts his hips up, driving his entire length into her as he releases a large load of his hot draconic cum deep into his sister's pussy. At the same time, her walls clench up around his shaft as she reaches her own orgasm, her juices mixing with the water in the hot spring. They both pant lightly, quickly catching their breaths.
The siblings look at each other, her golden eyes meeting his red ones. Their eyes have shifted, taking on a more draconic look as their personal lust for each other fades away, and their dragon instincts kick in.
plap plap plap plap plap
"A-Ahhh...! Corrin...!"
"Ngh... Lilith..."
The sinful sounds of skin slapping against skin fills the area. Lilith is bent over the side of the side of the hot spring, her brother ramming her tight cunt repeatedly. Their sex has taken a much more heated turn, their draconic urges taking over. Corrin is ravaging her with fierce, powerful thrusts, not having to worry about hurting her due to the high physical resilience of dragons. He delivers a firm slap to her already bouncing rear, earning a surprised yelp from the girl. While she enjoys slow, sensual sex, Lilith is also a huge fan of this significantly rougher treatment. She knows that her brother would never have malicious intentions toward her.
Corrin grabs and pulls that beautiful multicolored hair of hers, causing the dragoness to arch her back and moan out loudly. He moves his other hand over her ass, before delivering another slap to her rear. He can already feel himself getting close again, but rather than ending here, he decides to switch things up.
Grabbing her by the hips and pulling out of her, he flips her over onto her back, causing her to yelp again. He pushes her legs up and climbs on top of her, pinning her down into a mating press and thrusting himself back into her. He resumes his rough fucking of her, drilling his sister's insides with the draconic ferocity that she's come to love. She quickly reaches her own orgasm after the sudden change in position, her warm juices flooding over her own waist and pooling on the already wet ground beneath them.
Feeling the flood of warmth beneath him, Corrin reaches his limit. He thrusts his entire length into her, before erupting with another orgasm inside of her. His own sister is once again flooded with his thick seed, making her insides feel full and warm. Excess cum spills out of her, gushing onto the ground, joining with her juices and the splashed up spring water.
Both are once again panting, though they're far from finished.
Several hours later...
Corrin sits back down in the hot spring, sighing contently as the hot water washes over him. Lilith promptly sits down next to him, her legs shaky and her hair a mess. She leans against her brother, who puts an arm around her. They share a brief but loving kiss, before resting their heads against each other. They have content smiles on their faces, not even thinking about nor regretting the incestuous acts they just did together. All they care about is being in each other's arms, strengthening their family bonds, and simply enjoying the feel of each other. They haven't thought about the taboo nature of their relationship since they started this whole thing.
Besides, there's nothing taboo about instinct.
All done! Another one-shot request down, several to go! XD
This one's a bit on the shorter side, but that's what fit this scenario I was given. But I really like how it turned out, and I really like this pairing as well! There definitely aren't enough Lilith stories out there, incest plots or otherwise.
Anyway, feel free to PM me any FE lemon one-shot ideas you might have! I can't accept every request, but I absolutely take each one into consideration!
Leave a review if you enjoyed, or leave constructive criticism if you didn't! I'm always open to feedback on my stories.
And with that, I'll hopefully see you next time!