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Endless Pleasure

Summary:

The dynamic of this fic is loosely inspired by the artist, Thiccwithaq's interpretation of Aether and Lumine. This story contains topics of extreme taboo such as non-con, incest, drugs and mind break. If you don’t like that stuff, you should probably avoid reading this. Everything here is a work of fiction/fantasy. This is fic is way too horny.

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Aether groaned and grimaced, waking up after being unconscious for who knows how long. The last thing he remembered was seeing his sister for the first time since he woke up on Mondstadt’s beaches. She had appeared before him while he was exploring mysterious reports of an inverted stature of the Seven with Dainsleif. He opened his eyes with great effort. He felt a pounding in his head and the feeling of cold stone against his face. As he sat up and his vision adjusted to the darkness around him, he noticed he was in a sealed room, in front of him was a steel door and on either side of the door were two Abyss Heralds. Aether instinctively tried to jump back and reach for his sword, but he found his movements were stunted. His hands were bound and he had a metal chain wrapped around his neck, attaching him to the wall. He looked back up to see two abyss heralds watching him intently. 

“Where am I? Let me go!” Aether yelled at them, but got no reaction. “Where is my companion? Where is Dainsleif?” Again, no answer from the Abyss Heralds. Aether tried to use his elemental powers but found that they couldn’t be activated. “Wha- what did you do to me?”

Finally, one of the Heralds let out a chuckle, “heh, it looks like the Queen was right, he's powerless.” Both of the Heralds relaxed as one began to speak up “Listen up, the only reason you’re not dead is because of orders from our Queen. You’re apparently someone very important to her and she is on her way to see you now. Until she gets here, keep quiet.”

Aether began to struggle, realizing the predicament he was in. He was in the depths of the Abyss and to make things worse, he had fallen into the Abyss Order’s hands. Unfortunately, the only thing Aether succeeded at doing was digging the chains into his skin, causing him pain. He took a deep breath, “ Calm down ,” he thought to himself. “ People will realize I’m missing. Don’t start feeling hopeless yet. Dainsleif should know how to find me. For now I need to focus on surviving my meeting with this ‘Queen’ they keep talking about .” Aether sat down against the wall where he was chained, trying desperately to formulate an escape plan as he stared defiantly at the Abyss Heralds. 

Before long, he heard the sound of footsteps, and the Heralds stood at attention. 

“Stand up, maggot! The Queen is here!” Aether sat still, not wanting to dignify this “Queen,” with any such respect. But as the footsteps grew louder, his body began to shake. He couldn’t deny the feeling of immense power approaching him. He heard the door unlock and a slender figure stepped into the room, her white dress illuminating the dark room. Aether jumped to his feet in shock.

“L-Lumine! How? What are you doing here?!?” Without warning one of the Heralds drove their fist into Aether’s gut, taking all the air out of him and almost making him pass out. He fell to his knees, coughing and gasping for air, trying to understand his situation. 

“How DARE you talk to our Queen with such disrespect! The punishment for such a crime is absolute!” The Herald screamed at Aether, his pyro elemental powers lighting up the room as his rage boiled over. “You filthy dog, you’re not fit to be in her presence!”

Aether knew something was wrong. Abyss heralds were no pushovers, but he could normally take a few blows from them before he was injured this badly. He tried to survey his situation as the room lit up from the Herald’s flames. It was a square-shaped room with no windows or exits aside from the door in front of him. The woman before him was definitely his sister. Not only did the sight of her confirm it, but he could feel it in his soul. As the Herald continued to berate Aether, Lumine silently brought her hand across her waist and grabbed the handle of her sword. In a single motion, the blade exited her sheath and re-entered, barely able to be perceived. The pyro emanating from the Herald extinguished almost immediately as Aether heard the Herald’s body hit the floor- completely lifeless. 

“M-my Queen!” the other Herald knelt down and bowed his head.

“Take this corpse and burn it. Dirtying my blade is enough to make me vomit.” Lumine said coldly, without even looking at the other Herald.

“B-but, what did he do wrong?” The other Herald asked, “the standard protocol for someone who disrespects you is-” 

Before he could finish his sentence Lumine turned to him. “Useless.” With complete mastery of the elements, fire erupted from the palm of her hand. Lumine incinerated both of the Heralds before her, leaving no trace. She was able to control her flames along with anemo and hydro to contain the heat in a small area so Aether wasn’t hurt.  

Aether was at a loss for words, she was incredibly powerful, but most of all he was confused. What was she doing here? Lumine turned back to face Aether and she smiled warmly at him. 

“Aether, my dear brother, I am so glad that we’ve finally been reunited.” she lunged forward and hugged him.

“Lumine, what's going on? Nevermind that, remove these chains- we need to escape here!” Aether said frantically. 

Lumine leaned back from her hug and pouted. “You didn’t say you were glad to see me.”

Aether looked at her confused, “What? Of course I’m happy to see you! We just need to get out of here before we can relax. I’ve been looking for you nonstop since I woke up, but we don't have time for that!”

Lumine smiled once again, “Really? You’re that excited to see me? You’d travel all across Teyvat for me? Oh Aether, I love you.”

Once again Aether was taken aback by her strange attitude, “Yea, I love you too, now can you please break these chains?” 

Lumine took a step back, “I think you’ve actually misunderstood something. You see, I’m actually the Queen of the Abyss Order. They captured you on my orders… you’re kinda my prisoner right now.” she giggled to herself after saying it out loud. 

Aether looked at her with fear in his eyes, “Lumine… what…” He backed into the wall, “what about my friends? Paimon?”

Lumine frowned. “Aether, what do you take me for? They’re fine; mostly unhurt.”  Aether sighed with relief. “But, Aether, I don’t understand why you’re so concerned about them. I spared them because I knew they were important to you, but aren’t I all you need? Before this, it was just the two of us. It’s always been just the two of us.” 

Aether couldn’t understand what was going on, “Lumine, what do you want? Why are you acting like this? It’s not like you.” 

 

Lumine reached forward and grabbed Aether’s face, pulling him in and kissing him. Aether’s eyes widened, he tried to pull away, but she was far stronger than he was in his current state. He felt her tongue press past his lips as it explored his mouth and wrestled with his own tongue. Lumine finally broke the kiss, still holding Aether by his face. “Isn’t it obvious dear brother? I want you . I want to kiss you. I want to hold you. I want to fuck you . I want to spend all of eternity bound together in a sea of ecstasy.”

Aether looked at her horrified, “What? How? B-but, we’re siblings! We can’t do something like that! Please, stop joking around!”

Lumine bit her lip, “Ahh, yes, we’re siblings. We have a unique connection that nobody else can ever replace! Oh Aether, I can hardly contain myself, I’ve been thinking about what I want to do to you for a long time now. While at the Abyss Order, I discovered something very interesting about our biology- once our bodies learn the pleasures of sex, we’re insatiable . A chemical switch flips on in our brains making us completely beholden to our most carnal desires until they are satisfied. I want to teach you the wonders of what I learned about myself during my own adventures.”  

Lumine grabbed Aether's shirt and began ripping it off, causing Aether to struggle against his chains and bound hands. “No, no, no! This isn’t right! Please, Lumine Stop! I don’t want this!” Lumine didn’t pay heed to his words, and began pulling his pants off. Soon Aether was stripped naked as he tried to cover himself. “P-please… Lumine”

Lumine stood up, “that look you’re giving me is so sexy, brother.” She looked down and noticed he wasn’t hard. “But we need to fix that before we begin, luckily, I know just what you like.”

Lumine bent down and began to unfasten her boots. Aether’s eyes widened. “That's right, of course I know about your foot fetish. When we were kids, I remember you couldn’t keep your eyes off my feet, haha! Well I’m finally going to indulge that little fantasy of yours.” Lumine pulled her boots off revealing her perfect, pale white feet. Her nails were manicured and she had long slender toes. Her feet were completely smooth and looked incredibly soft. 

Aether shook his head, “no, wait- that was just a stupid kid thing, I don’t-” Before he could finish Lumine pushed the sole of her foot into Aether’s face.

His mind immediately went blank, feeling her soft, cool skin rubbing across his face. He didn’t want to like it, but before he could protest, Lumine pushed her toes into his mouth.

“Hahaha! That's right, suck them!” Lumine began to laugh, “And don’t try and struggle too much, you’ll just end up hurting yourself. If you think you’re weaker than normal, you’d be right! You were administered a drug that significantly drains you of your strength, you’re no stronger than a child right now.” 

Aether tried turning his head, but Lumine had him pushed against the wall, there was nowhere for him to run to. His mind was racing with worry “ what drug? Why did she do this? Why am I enjoying the taste- wait, NO !” Her foot pressed into his face as he felt the velvet soft soles across his face. If this were any other situation, Aether would be in heaven right now. Her feet were perfect in every way. Her soles were as soft as cotton, and his face almost melted into them. The smell was divine, being slightly stuffy from being in her boots, but nothing off-putting either. And then there was the taste- But this was his sister! He continued to struggle, both against his restraints and his own conflicting thoughts.

“Aether?” Lumine said in a playful voice, “Please, lick my feet. I’ll reward you if you do. I may even let you out.” Aether stopped struggling, weighing his options and his own contradictory thoughts. He knew that his only chance at escape would be with Lumine’s help. He opened his eyes and finally began to admire his sister’s feet. “Aether, I want to feel your tongue on my soles, I want you to suck my toes. Please, brother?” 

Aether remained silent, Aether's eyes locked onto Lumine's feet, his gaze tracing the curves of her toes, and the delicate shape of her soles. If she was his only ticket to escape, what was the harm in doing what she said for now?

He leaned forward and licked Lumine’s sole from heel to toe. He immediately felt his heart rate increase. “ What was that taste ?” he thought to himself, “ It’s addictive, I need more !” Aether began frantically licking at Lumine’s feet causing her to burst out laughing. His tongue glided across her soles as he lapped at her feet.

“Hahahahaha! Aether, wait! Oh archons, you’re such a freak! Hahahah!” Aether couldn’t control himself, he wanted to stop but it was as if he was controlled by something else. His tongue explored Lumine’s sole as he licked every centimeter of her foot. He moved on to her toes and began sucking her big toe first, but quickly moved on to all of them. 

Aether was fighting to stop himself, but his body wasn’t listening to his brain. He was struggling to free his hands so he could grab her other foot and press both of them into his face, but he was still far too weak. He slithered his tongue in between Lumines toes, savoring their salty and musky flavor. As he moved back down her sole he began nibbling on her arches, making Lumine giggle to herself. “ What is happening to me?” Aether thought before he had a horrifying realization, “Oh no. Oh Archons, no!”

“Oh MY!” Lumine pulled her foot away and put a hand over her mouth. “Aether… wow.” Aether was fully erect, his cock standing at attention, at least 21 cm long and an impressive girth of around 15 cm. Lumine’s face was illuminated by her devious smile as she jumped up and down “I knew it! I knew it!” 

She grabbed Aether and lifted him to his feet. “The drug we administered is a spiritual enhancement drug, at the cost of your physical powers, your senses and desires are enhanced many times over. The only catch is that the drug is only effective if two people are compatible. Of all my time in Teyvat, I have never found someone who was able to withstand this drug, but it is working perfectly on you! It must be because we’re so compatible, hee hee♪♪” 

Aether stood with wobbly legs shocked and appalled at his body’s reaction to his sister’s feet. “Lumine, I-I’m sorry…”

Lumine slid her dress off her body, leaving only her panties and bra. She walked up to Aether and pressed herself against his body, their skin pressing against one another. Aether’s cock twitched in-between Lumine’s legs as she caressed his chest and began to lick up his neck. “Mmmm, Aether, I knew we would be compatible, but I didn’t know you were so big.” Aether groaned at the sensation of her tongue sliding up his neck. “I can’t wait to ride this thing until you can’t see straight.” She began to bite and kiss his neck, causing his body to shudder in delight. 

Aether’s breathing was ragged, “Wait- Lumine… It’s just the drug, I felt like something was controlling me. I don’t want this! You don’t want this! Please, stop- Ahh, stop kissing me! The sensation is too much!” 

Lumine stifled a laugh, “too much? Hahaha! Aether, we’ve barely begun. If you think this is good, I’m going to blow your mind .”

“No! I didn’t say it was goo-AAAHHHhhhh” Lumine brought her thighs together, clamping down on Aether’s member. Her thighs were toned, but extremely soft, it felt like his member was melting into them. Lumine wrapped her arms around Aether's neck, and leaned in close to Aether’s face.

“Oh fuck, you feel so hard against my thighs, brother.” Aether’s cock twitched, making Lumine giggle. “You wanna fuck my thighs?” She began slowly moving back and forth, sliding Aether’s throbbing member in and out of her thighs. Because of how hard he was, it was sticking straight up, pressing against Lumine’s pussy as she slid back and forth. It was obvious to Aether that Lumine was soaking wet. 

Aether kept pleading with Lumine, trying to resist the pleasure he felt himself. “No, stop, fuuuuck, it might slide in if you’re not carefu- Ahh, oh fuck!” Aether could hardly keep his thoughts straight, he desperately wanted Lumine to stop, he knew they’d crossed a line that should never be crossed. But Lumine’s juices were beginning to lube up her thighs more and more, as Aether’s cock became more and more slick. 

“Slide in?” Lumine questioned, “If that’s what you want, go for it.” She pulled her panties to the side and kept sliding back and forth on Aether’s cock. She bit her lip as the friction built and her juices leaked onto his member. Aether could feel the tip of his penis sliding in-between her pussy lips as she gave him a thighjob. The drug was definitely making everything he was feeling more intense. He felt that familiar tightness in his balls and knew he wasn’t going to last very much longer. He became more desperate. 

“No, PLEASE stop! Fuck! please, not this, I don’t want to cum! Please, you’re my sister!” Aether begged Lumine for mercy but she responded by squeezing her thighs tighter and speeding up her movement.

“You’re already about to cum?!? You must be really enjoying yourself, go on, cum for me! Cum for your sister! I don’t mind.” Lumine sped up her grinding and felt Aether’s cock begin to twitch violently and leak precum all over her thighs. Every time she would pull her thighs back, the head of Aether’s cock would press against her pussy, just barely not being at the correct angle to enter. Instead, each thrust pushed it tightly against her entrance, only to barely slide out before it went in. “OoooooHhhhh fuuuuck, that’s so hot, bro.”

Aether closed his eyes and clenched his teeth, “No, I’m not enjoying myself! I, I…” Aether was powerless to stop what was coming, he felt his member pushing against her entrance, and with one final thrust forcing it back between her thighs, he passed the point of no return. He threw his head back and screamed in pleasure and shame, “NO!!”

With Lumine grinding Aether’s cock head into the entrance of her pussy and thrusting it in and out of her thighs, she felt his penis grow even harder as an explosion of cum began to shoot out of his cock onto her thighs and pussy. He cock throbbed over and over as cum spilled all over her. Lumine kept sliding back and forth on his cock until his orgasm subsided and Aether fell to the floor on his knees. He trembled as his eyes filled with tears.

Lumine let out a deep and satisfied sigh. “You can pretend you don’t like it, but your body tells a different story.” She wiped her hand across her cum-covered thighs, cleaning them off.

“That's not- that's not true…” Aether said in between sniffles and tears. “You- you just used me… How could you?”

Lumine crouched down to his level and hugged his head into her bosom. “Now now, you’ve always been such a crybaby. I know you like it because we’re connected. We just need to get you out of this mindset you have about you and I. We’re otherworldly beings, the morality of this realm doesn’t apply to us. And I’m going to prove our nature to you.” Lumine stood back up and removed the little clothing she still had on. “With every orgasm you have while under this drug’s influence, its physical effects begin to wear off. You should be feeling more like yourself now.”

Aether stopped crying and sat up. “Y-you’re right. It’s much easier to move.”

Lumine smiled “See? I only want what's best for you. We can’t leave the drug in your system too long or else it might have lasting physical consequences. But now that you’ve awakened your sexual desires, you’ll no longer need the drug to feel this way- our spiritual connection will be enough. Though… There's a funny little hangup. The only way to remove the drug is to make you cum over and over again until it’s completely expelled from your system.” Lumine couldn't keep the smile from creeping across her face. 

Aether’s hope was quickly dashed by this revelation. “What? You mean… we have to do that again if I want to recover?!? There has to be another way…” His mind was darting between the idea of being betrayed and forcing himself to believe that Lumine was trying to help him in her own twisted way.  

“Nope!” Lumine grabbed Aether and placed his head on her thighs, lying him down across the ground. “Now, dear brother, relax. Take some deep breaths.” 

Aether didn’t know why, but he did as she said.

“Good boy. You’re so good for your sister.” She said, stroking his head. She wiped away his tears. “Now, brother, get ready for round two.” 

Aether’s mind was brought back to reality, how has he slipped so easily into her influence?! He felt Lumine’s hand working its way down to Aether’s member. “Oh- what’s this?” Lumine cooed, “You’re already hard again?” Her eyes lit up in excitement. 

Aether looked down in bewilderment, he was. But how? “Oh Aether, you’re such a naughty boy!” She pulled his head into her breasts as she wrapped her hand around his shaft. His cock was still slick from his previous orgasm, providing ample lubricant for her hands to glide up and down, making the room echo with the sound of wet slapping as her hand slid up and down. 

Aether closed his eyes, gritting his teeth. He forced himself to hold back from resisting Lumine. “ I just need to get through this ,” he thought to himself. “ I don’t like this, it feels horrible, but if this is what removes the drug from my system, regaining my strength may be my only hope for escape. I don’t know what happened to Lumine, but I swear it won’t end here! I will save her from whatever spell she’s under! ” 

“Aether,” Lumine whispered soothingly, sending shivers down Aether’s spine, “I can tell you’re thinking about something right now. Just let it go, relax. Clear your head. Focus on the pleasure.” The sexuality of his sister was exciting Aether against his will, but there was a part of him that thought she was right. If he just focused on the pleasure and came as fast as he could, he could put an end to this sooner. 

Aether could feel his body responding to Lumine's touch, despite his mind's protests. His hips began to move involuntarily, thrusting into Lumine's hand as she stroked him.

Lumine's breathing grew heavier, she leaned forward, her breasts brushing against Aether's face. She felt her brother humping desperately into her hand and bit her lip. 

“Fuck, I’m glad you’re finally getting into it! Archons, I’m so horny for you right now.” Her grip got tighter and her speed increased as she pumped Aether’s cock. She briefly stopped to reposition herself, gently lifting Aether’s head off her thighs and moving herself closer to his cock. She positioned herself in between his legs and wrapped both her hands around his massive member. Aether looked at her, his face told Lumine that he was uncomfortable, but this time there was something else in his eyes- lust. And Lumine could tell. She smiled and began working up and down his cock with both of her hands, making him throw his head back as he let out a long moan. 

“I bet you’ve never felt pleasure like this before, have you Aether?” Lumine asked.

She was right, it was only a handjob, but the drug had ramped up his sensitivity many times over. Her hands were gliding up and down, sending shockwaves of pleasure down his spine every time she reached the head of his member. “I’ve… No, not this intense” Aether admitted, sounding defeated as he tried his best to orgasm and end this. 

Lumine giggles, “That makes me happy,” Aether’s cock began to leak precum and he felt his orgasm building. “But that also means you have something to compare this too… You’ve been with other people besides me, is that right?” Lumine’s voice lost its playful tone. 

But it didn’t matter, Aether was already at his limit. “Archons, I’m gonna cum again, I’m- nnngh!!” Aether’s pleasure was cut short as Lumine’s hands squeezed his cock tight- preventing an orgasm and sending a sharp pain his way. “Ahhh, Lumine!”

“It makes me upset thinking about the other partners you’ve had.” Her grip kept getting tighter, and Aether pain was getting more and more intense. “You aren’t thinking of them while your eyes are closed, are you?” 

“NO! NO! Never! I’d never! It’s just you!” Aether desperately said what he thought she wanted to hear to make the pain stop. Luckily it seemed to work. 

“Hehe, I knew it! And look-” She released her grip on his cock, “You’re still so hard for me!” She resumed stroking his cock with renewed vigor and speed. The switch from pain to pleasure brough Aether to an orgasm almost immediately; he barely had time to react. 

“Wait, I-” it was too late for warning, he began to shoot ropes of hot cum all over Lumine’s face. Lumine jumped in surprise but quickly smiled and opened her mouth to catch his load. Her hands didn’t stop, they kept pumping up and down on Aether’s sensitive cock, causing him to spasm and contort his body trying to get away from the overstimulation. 

“AAahhhhh, stooop, it’s too much!” He wriggled under her grip as she milked the last drops of cum out of his cock. With one hand holding firmly onto the base of his cock and the other roughly milking the shaft up and down. 

Lumine closed her mouth and swallowed, her eyes glossing over in pleasure. “Whoa, you must have been really into it! But I barely even started so… I’m not going to stop quite yet.” Lumine used one hand to work up and down the length of his shaft while the other one rubbed the tip of his penis by pressing her palm into the head of his cock. Aether’s calls for mercy turned to pleading as tears streamed down his face. The sensitivity of his cock was painful, but the pain was being coupled with an intense pleasure that wouldn’t let him lose his erection. Lumine’s delicate hands were merciless and refused to relent. He could only endure a couple minutes before he felt a new sensation building up inside of him. His cries echoed off the wall of the room as a second orgasm hit him without warning. His cock spasmed and sprayed torrents of cum all over Lumine’s hands and face. 

“Lumiiinneee!!” Another orgasm. Lumine’s hands and face were covered in his cum, and his cock was coated in it as she continued to jerk him off.

Lumine’s breath was ragged and she was drunk with lust. “Fuck it, I can’t take it anymore!” Lumine finally removed her hand from Aether’s member, he let out a loud moan of relief. But his relief was short-lived. 

Lumine pounced on him and straddled his cock, “I’ve been soaking wet! I’ve been craving your fat cock this whole time! It’s not fair that only you’ve cum! It’s not fair!” She reached over and broke the binds on Aether’s hands. He was now completely free and unrestricted. She positioned herself on top of Aether and moved her pussy on top of his twitching cock which was trying to recover from back to back orgasms. “I’ve done so much for you, you need to make me feel good too!”

Aether’s head was spinning, he had just had three orgasms in a row and was struggling to stay conscious. But now Lumine had finally freed him in her lust-filled state and he had the strength to lunge forward. He grabbed Lumine’s shoulders, finally able to move. 

“Wait, not this! We absolutely cannot have sex!” Aether was struggling to catch his breath, but his mind was still intact through it all. “Look at me, Lumine! You are my sister, we can escape this place together, but we need to stop now!” 

Lumine frowned. She grabbed Aether’s hands and raised them above his head with ease; despite what Aether thought, she was still far more powerful.

“But it’s not fair ! I haven't cum at all!!” Lumine began grinding Aether’s cock against her pussy, making Aether grit his teeth. Even after all this, his erection would not subside. 

“N-no! You’re still my sister and I’m your brother! I’ve told you that I don’t want this!” Aether clenched his teeth, trying to fight the pleasure he was feeling.

“But you got to cum! You got to cum so much!” Lumine’s voice was shaky and pleading with Aether. “Please brother, please! I need to feel you inside me!” Lumine was mindlessly bouncing up and down on Aether’s lap, his cock, being smushes by her pussy with each bounce. “Brother, please!” 

Aether tried to argue until she rose up one more time in her bouncing motion, Aether’s member twitched upright and when Lumine came down, she impaled herself onto his cock. She took his entire length inside of her at once- the copious amounts of cum lubricating it enough to fit. His cock pushed against her cervix and stretched her pussy to its limit.

Aether and Lumine screamed in shock and pleasure. Lumine felt like her brain short circuit. She felt so full, his cock perfectly filling her and pressing on her G spot. “OoOoOOooooohhhhh, Aaeeeetheeerrrr.”

“Lumine, what have you done? Please, take it out! It's too tight and I’m still sensitive, it hurts! Take it out!” Aether begged, feeling her tight walls clamping down on him in all directions. 

“No!” Lumine lifted herself up, with his cum still dripping down his cock and lubricating them, she slammed back down on his cock making a loud *PLAP* sound. “AAAHHH” She lifted again and slammed back down. *PLAP* “NO!” *PLAP* “It’s not fair!” *PLAP* “I want to cum too!!!” She began increasing her speed. Soon the room was filled with loud moans of pleasure and soaking wet bodies hitting against each other. “I wanna cum I wanna cum I wanna cum I wanna cum I wanna cum I wanna cum I wanna cum I wanna cum!” Lumine was like a mindless animal, impaling herself on his cock. 

“Archons, Lumine, stop! I can’t take it! I’m going to cum! Get off, now! Get off!” Aether desperately tried to tense his muscles to prevent cumming in his sister. “Please Lumine, please! Don’t make me cum inside you! Please pull out!”

Lumine did not stop, she instead got faster and tighter. “She squeezed Aether close to her body and tightened up as she plunged down on him once more “CUMMMIIIINGGGG!!!” She screamed as a wave of liquid washed over Aether’s cock and down his legs. Her pussy walls were spasming and tightening, further stimulating Aether’ member beyond what he could take.

“No, please!” Aether began to cry “No! I’m cumming! No no! Get off! Get off!!! I can’t hold it!” Aether was desperately trying to buck her off of him, but this motion only served to stimulate him more. “PLEASE” He begged with tears streaming down his face. “It’s too late!”

Aether’s body began to spasm underneath Lumine, “I’m sorry, I’m so sorry!” He screamed, his cock began throbbing inside Lumine, every muscle in Aethers body tensed up to keep himself from cumming but it was too late. Aether’s cock pushed against Lumine’s cervix and throbbed against her walls as he shot rope after rope inside her. Lumine did not stop riding him, milking his cock for all it was worth. "YES, YES, Give me your cum!" Lumine moaned in his ear. The sensation of her brother filling her up sent her over the edge once again, making her clench down on Aether harder. The sensation of his sister’s second orgasm milking a final torent of cum out of his cock.

Lumine continued to ride Aether’s cock, grinding their hips together as she rode out her mind shattering orgasm. 

Aether didn’t understand why, but his erection didn’t go away. He felt waves of pleasure overtake his body, all underpinned by a deep sense of regret and powerlessness. Lumine tried to pull herself off of his cock, but the very act of sliding it out made her knees week and she fell back onto his dick. She let out a guttural scream as her overstimulated pussy quivered in pleasure. She couldn’t bring herself to pull herself off, and instead began mindlessly grinding Aethers cock into her over and over again. 

She kept riding Aether until he lost count of how many times he orgasmsmed. It felt like his cock was constantly twitching in orgasmic bliss. He stared at the ceiling with his mouth agape, unable to think straight from the pleasure assaulting his senses. 

Lumine grabbed his face to make him look at her. “I love you, Aether. I love you!” 

Aether’s face was scarred with pain and his eyes were flooded with tears. Aether had long since given up on bucking her off, he simply laid down underneath her accepting his fate. 

Aether no longer realized that he was free from his shackles. At this point, there were no more drugs left in Aether’s system, but Lumine was right about their biology. His body would not calm down no matter how much he came. He felt that he had normal control over his body; his strength had returned but his spirit had been broken. He was no longer resisting Lumine or his own bodily reactions.

By the time Lumine finally began to slow down, it had been hours. Aether had lost track of time, his mind was fuzzy and he was fading in and out of consciousness, only to be brought back by an immense wave of pleasure as he shot more of his seed inside Lumine. There was cum everywhere, mixed together with Lumine’s. The room smelt of raw sex and their bodies were covered in sweat and fluids. Both were out of breath. Lumine finally collapsed backwards onto the floor as Aether’s cock sprung out of Lumine’s pussy with a loud and sloppy “POP!” 

His cock was rubbed raw and looked even bigger than when they began. It continued to leak out thick streams of cum onto his stomach in a seemingly endless state of orgasm. 

Lumine gasped for air as her twitching pussy tried to recover from so many consecutive orgasms. She herself was barely holding on to her own sanity. Lumine could feel the cum slowly leaking out of her pussy. Hearing Aether soft whimpers was the best sound in the world to her.

“F-fuuuuck” she moaned with slurred speech, “that was better than I could have ever imagined. And you’re still rock hard! I’m going to need a break for a few minutes, then we’ll get back at it.” Aether stared at her, defeated. 

“Lumine…” He said, “Why?” 

Lumine looked back at Aether, “Because I love you. I’ve always loved you. I awakened my sexual desires many hundreds of years ago. Our species is meant to have long periods of sexual release, but I was never able to achieve such a thing as there was nobody who shared my biology. When this happens, the feelings do not go away- they build. It builds and builds until you can’t think anymore… until you become a mindless animal. With every orgasm I felt my sanity returning… but it also felt like something inside me broke. I could have stopped myself hours ago, but I kept going. Even before this, I wanted you.”

Aether pushed himself upright and wrapped his arms around his sister. Despite it all, they still only had each other. “I’m sorry, I’ve been gone so long. I’m sorry I made you like this.” Aether said as he tightened his grip. 

For the first time Lumine’s face showed sadness “Why are you apologizing to me? Stop it. Stop it right now!” She pushed back from him and fell back onto the floor. “I know what I did to you! And the worst part is, I can still feel the desire welling back up inside me! I don’t even regret it… You need to leave here. I… I didn’t want it to happen like this. I truly wanted you to love me.” 

Aether used all his strength to stant to his feet. He looked down at his sister. “Lumine, I do love you.” Lumine looked up at Aether, his long blond hair seeming to light up the room, his body practically emanating light. “If I had known how to help you from the beginning, I wouldn’t have left you alone to suffer.” Aether’s eyes met Lumines and he began to get down on all fours on top of her. “Do you still feel desire?”

  Lumine swallowed hard, “Aether, what are you doing? You need to get out of here while my mind is still clear!” Aether grabbed her hands and lifted them above her head- she felt his erection pressing against her stomach. 

“Lumine,” Aether moved his pelvis back so his cock rested at the entrance of Lumine’s pussy, “my mind is clear.” And with that he slammed his entire length into Lumine yet again. 

“AAHHH” Lumine screamed as pleasure began to take over yet again, “No, wait a minute, are you serious?” Lumine asked between her moans. Aether began to pick up speed. Soon the sounds of their wet bodies colliding once again filled the room. “Fuck, fuck, Aether, you’re too big! This position is filling me to the brim!” Aether’s cock was hitting the entrance of her cervix and she could feel her own distended stomach each time her brother would thrust his entire length inside her. 

He grabbed her hips and lifted them, pushing himself deeper inside Lumine. She yelled in ecstasy. “I-I can’t believe it! Brother!” Lumine’s vision began to blur, this was everything she wanted and more. 

“I can’t stop!” Aether groaned as he violently pounded her. “I can’t go back after this!” He grabbed Lumine’s ankles and brought her feet to his face as he thrusted into her. 

Her feet were hot and slick with sweat. “Finally.” Aether groaned to himself. “You were right, I’ve wanted this since I was a kid.” He inhaled deeply before going to town on her soles, dragging his tongue along her feet and licking up every drop of sweat. His tongue fervently slid up and down her soles and in between her toes. He was licking at a frantic pace unable to get enough. 

His cock continued to strain against Lumine’s walls, her own moans getting louder as she felt her brother tongue massage her hot soles. “Fuck, why is this so hot?” She moaned out loud. “Suck my feet! Oh Archons, I love this! I’m almost there!” She felt her brother throb inside her with her words of encouragement. 

He pressed his face firmly into her pillow soft feet and savored the cushion-like smooth skin of her soles. The stimulation was too much and Aether’s cock swelled even larger, making Lumine scream.

Once again, he filled her pussy with his seed, spilling out all over the ground as he thrusted into her again and again, his face still buried in her feet. Lumine couoldn’t keep herself from orgasming yet again as she felt her brother’s pleasure link with her own. She slid Aether out of her, only to be grabbed and flipped around. 

“I need more.” Aether said in a deep voice, “Just one more time.” Aether grabbed Lumine’s hips and pulled her up so she was on all fours. 

“Hee hee, by all means, brother .” She waved her hips back and forth, being fed by Aether’s infatuation. 

Without warning, he slammed himself back inside. Back and forth, again and again. Lumine came almost immediately, tightening around Aether who responded in turn by grabbing her waist and slamming her onto his cock even harder. 

“Fuck! W-wait! Too rough!!” Lumine was drooling onto the floor, unable to muster the strength to put up resistance. 

“S-sister…” Aether growled into her ear.

Lumine felt a shiver run down her spine as she squirted all over Aether’s cock. “GHHAAAAA!” Her eyes crossed at the sound of her brother calling her his sister. 

“Lumine, I love you, I love fucking my sister, I want to fuck you forever!” Aether was mindlessly thrusting, cum spraying all over the floor, making the ground slick with their combined juices. His mind had been thoroughly broken. “Sister!”

One final time, Lumine felt him swell as she reached her ultimate climax. “Fuck! BREED MEEEEE!” She felt her stomach extend as Aether screamed so loud it could be heard outside the Abyss. With all that he had, he pumped his final load into her. Cum exploded spilled out as Aether mindlessly groaned and pushed has hard as he could into his sister. His orgasm lasted multiple minutes of mind shattering pleasure until, finally, his cock slid out of Lumine, satisfied. 

Immediately, his fatigue hit him. His vision blurred and he fell backwards into his own juices. His whole body was shaking and he was losing consciousness. Lumine pulled her ragged body over to her brother and lay on top of him, wrapping her arms around him. Neither of them even had the strength to speak. They lay on the ground, engulfed in overwhelming pleasure. 

Whatever inhibitions either of them had had disappeared; this was the beginning of an eternity of euphoria.